Wait, your judging the games as "Horrible", based off of, what. A minute of actual game play, 20 or so odd photos, and a pictures of only 7 out of the ATLEAST 100 Pokemon that are always added?
How about you wait to see the other Pokemon this generation, and actual gameplay, before judging.
Lets tackle your arguement though.
1. Grounded in Reality:
The first generation wasnt even spot on with this arguement. The first Pokemon, Bulbasaur, makes no sence. Its just a generic, 4 legged animal with a plant on its back. Blastoise. It has guns, in its shell. Never saw a turtle with Guns before. Lets move onto Paris, a Crab with Mushrooms in its back. Lots of the First generation Pokemon had bland typing because it was Game Freaks first attempt. The gameplay was so unbalanced that they had to add two new types for balance. The fact is, most Pokemon share a relation to a real life animal, besides the legendaries.
In the newer generations, the Grass type is the least-explainable; it looks like a type of Geecko, or lizard. Then we have the fire-pig and the Water-Otter. All of which are explainable. Do they fit the role? A fire pig makes as much sense as a Mushroom Crab. Its not like they have a Blue Pokemon you catch during fishing thats a Fire Type. Most Pokemon fans LOVE the second generation. By your arguement, Sudowoodo is a bad Pokemon; he should be Grass Type (he looks like a tree, afterall... Ive never seen a stone that looks like a tree. NOT REALISTIC)
Typing revolves more around color and role; not "it should be realistic". Seriously, worst game to have a "realism" arguement for.
2. Form after Function:
This arguement confused me. You CANT make that arguement yet; you dont know ANY of the stats of the new Pokemon. Not only that, but those functions are generally kept. Nosepass was a bulky rock. He had a HIGH defence. Granted, he was a shit Pokemon; that was his intent (a tank for lower tier battles). Probopass, his evolution, is an improved Tank. Not great, but useable. Most Pokemon server the purpose they look. There are always exceptions though. Lets go back to Sudowoodo. Hes a Pokemon that disguises himself as a Tree, even though hes Rock. Therefore, you'd assume he'd get lots of moves for Blending in; mimicing and Evasion. He gets the move Mimic and Copycat; thats about it.
The form of a Pokemon usually shows you what it does. When you see a Pokemon like Magmar, you say "Thats a Fire Pokemon". Thats the way it should be. Some Pokemon are set up in ways that you cant tell their purpose. Thats part of the mystery.
3. Simple Color Design
Once again... I dont see your issue. You've seen 7 Pokemon; and NONE of them have clashing colors. And this isnt a huge issue in other generations either. Yes, some Pokemon have more complex color designs. Thats because of Technology. You can have more colors, and more colors usually make the Pokemon look better. As far as Im concerned, this is just nit picking.
4. Similar Design Themes
Small Pokemon are Cute, Big ones look mean. Fair enough. But there are always inbetween Pokemon that have a look, well, inbetween.
Honestly, we would all get sick of Pokemon if all the small ones shared an "aww, cute" appeal. It would get boring, and really kill variety. Plus, a flawed arguement once again. Would you want to cuddle with a Weedle?
5. Evolution.
Blastiose has guns. In its shell. A tree on a Pokemons back (which, isnt that big if you look at the Pokedex) isnt that big of a deal. No one complained about Venasaurs tree.
GameFreak wanted more variety in the game. Yes, they made a Grass type turtle; I thought it worked out well. Torterra, the final evolution, has a tree on its back because, well, it fit. Its a land turtle. If they made EVERY turtle Water, EVERY newt Fire, every blah blah have the type blah, the game would get bland. Mixing things around is good.
6. Pokemon Should be Physically Equipped:
Nit-Picking again. Noespass doesnt have a Snort attack? If you read the data about Nosepass; his Nose is a Magnet. Thus equiping him with Magnet based attacks, and Electric attacks. In his attacks; he has attacks such as Lock On, Zap Cannon, Discharge, Magnet Rise, and Thunder Wave. Lets not also forget hes a rock, and has Rock based attacks (Earth Power, Earthquake, Rock Throw, Rock Polish).
Lovedisc was a Pokemon designed to just exist. An interesting idea; a nice idea, but a Crap Pokemon. Its a fish; it has water attacks. And I believe its designed after a real type of fish. ALSO, it gets Attract, Charm, Captivate, and Sweet Kiss. Moves that involve LOVE, and GENDER.
7. Simple = Better
No, simple brings you back, 10 years ago, to the GameBoy Color, when games couldnt have Complex designs.
This entire rant is just because YOU think Pokemons gotten worse because its changed.
Let me put it to you this way. Do I like Nosepass or Luvdisc? Hell no. Some of the new Pokemon look uninspired, and some arent good. A good portion are good, however.
The designer of the originals (the 251) has changed; and yes, the Pokemon are different. Still doesnt make the games any less fun. To be honest, I like the newer Pokemon because they make the Gameplay better (Ya know, the thing that makes games fun).
And yes, I have fond memeories of the originals. But that time is over. The originals Gameplay is NO WHERE NEAR AS GOOD, or engaging, as todays. I understand you have nestalgia, but seriously. The games are good enough, and the Pokemon, while they arent the greatest, arent bad. There different.