I don't think you're really responding to what he was saying.
It's possible to find groups on FF who are willing to help you learn. It's not a question of being lazy or anything, just of having the opportunity to learn - by putting in the effort, of course. Just so you don't see the classic "FF fanboy" response: I know there's toxicity on FF, etlitism and the like. But on the whole, you can still find healthy groups and guilds for newcomers.
On WOW, it's more complicated. Hence "Just be good": you're expected to be good, even if it's your first raid, when you've just arrived and aren't yet very familiar with the game's mechanics. In a situation where you'll be less effective than the player who's been around for several expansions, not because you're a bad player per se, but because all MMOs require a period of acclimatization in terms of rhythm, recurring mechanics, combat design, etc. etc. By the way, you don't need to go into HL content to find this mentality: I've seen people kicked out of levelling dungeons many, many times... Because they said they were new.
It's pretty hard to blame WOW players for this mentality: the whole game is calibrated to favor the competitive over the top, even in levels where it shouldn't be. The ultra-focus on esport, the non-moderation of sites like r.io, or even mechanics like the timer in MM+ (content I love... But which doesn't lend itself at all to calm exchanges between players, because nobody is patient with a timer on their butt). All this creates an atmosphere that makes the average player extremely nervous.
That's what a lot of people complain about on wow. It has nothing to do with being PL'd by people who will do everything for you.