I've seen a lot of criticism of 4e. Some I think are valid, some aren't.
The one criticism that continues to baffle me is the comparison between 4e and World of Warcraft. I see it thrown around all the time. Not just here, but in RL, elsewhere on the internet, etc.
I have never played WoW, nor any other video game (excepting Space Invaders a hand full of times).
My only exposure to WoW came from South Park.
But it impossible to exist in society and not understand what a video game is.
There are two video game characteristics that I believe have influenced 4.0E, and in my opinion both are negatives.
1) Balance: In WotC's quest to have all classes and races balance with each other in all combat scenarios, many of the races and classes seem a bit sterile, missing much of the uniqueness they had in previous editions.
2) Range: No spell has a range greater than 100 feet, which is less than medium range in the previous edition. It is my opinion that range was limited by design so that all action could fit on a computer monitor.
As I said many times earlier, I like 4.0E. But I see those two negatives as video game derived.
Note: When people who are not WoW players compare 4.0E to WoW, they are likely categorizing all video games into one, using the name of the one they heard of most and demonizing it. In a similar manner, some non role players categorize all RPG as D&D.