I'd disagree. Stealth was kinda broken in the game where, in my experience, if you had broken a law and were in a city, at some point no matter how sneaky you were getting in and out, some asshole guard would run up to you and say, "Pay up that 300,000 gold you'll never make, or kill another thirty of us guards aside that one invincible one who you can't kill 'cause they're quest locked. But you can't do the quest 'cause they're always hostile."
As well as I could enjoy walking place to place in Skyrim, I can't do that in oblivion. There's so much... nothing. I mean, maybe a wolf and a half if you were lucky. Sometimes an imp. But it was so bland that fast travel felt like the only way to get around. Sure, I missed out on a few things. But I didn't waste thirty minutes of walking through nothing.
I remember trying to be a spellcaster in Oblivion sucked as I never had any money nor could find a way to get new or other spells. The damned Mages guild would never talk to me, so, you know, whatever. Not to mention I couldn't ever cast a new spell anyways because leveling anything in Oblivion was like taking a cheese grater to your face.
I guess Skyrim did simplify a lot of things, but then again, it was far more playable and accessible. Which I won't say is a bad thing, I can see it may have negative effects down the line, but damn, you can play the game without trying to figure how shit that just isn't explained in any decency.
Oddly enough, I could pick up and play Fallout 3 at the same age as I played Oblivion and manage to play and enjoy that one so much more. I know I wandered the entire capital wasteland without getting bored, but in Oblivion I never made it too far out of town unless I had to find the place for quick travel.
Ironically: Another game that doesn't properly explain things to you is one of my all time favorites. (Dark Souls.)
And, uh, mind you, most of this opinion is when I played the game when I was like... 14 to 16, or somewhere around there, going back and trying to play the game over and over for so long a time and never making much progress.