The way most people play traditional PvE MMORPGs, they take absolutely no skill.
Let's say you're on the hunt for new gear. Do you?
A) Go collect a bunch of loot, then compare the various stats, and decide what fits your character the best?
B) Determine what stats you need, then go to MMOWEBSITE to find out what has it, then go after it?
C) Go to MMOWEBSITE, find out what the optimal build is, then grind the hell out of what it tells you too till you get there.
Most people I've talked to advocate playing like C. I think it goes without saying that C take no skill and little effort, apart from free time, and button mashing. Sure, someone needed to figure out that build, but it wasn't you, and so it took you NO skill to do that.
Another little test.
You fight a boss with a party / raid and try a new strategy. What happens?
A) Everyone gets together afterwards and discusses how the strategy could be better.
B) Everyone yells at you for not doing it the way that everyone else does, and tells you that you suck at the game, and shouldn't be in the guild.
Guess which one is the activity of a skill-based game, and which one isn't? Doing things the same way as all the other people is not a skill. Any game that encourages you to play it in exactly one way takes no _real_ skill to play. AND, every time that you tell someone they're doing it wrong because they don't follow everyone's lead, you are ADMITTING that your game takes no skill.
As another analogy; back in the day of test-based adventures.... finding the play though of the game and typing the commands in the order given takes as much skill as looking on whatever MMO site and following those directions to bring down RAID BOSS.
Follow ups to predicted criticisms:
No, I'm not JUST some bitter player. I can follow directions as well as anyone else. I just don't find it challenging.
'Well *I* don't play the game that way' Bully for you. I'm obviously not talking about you.