The level of maturity in this game

[Yuufarlc]

I
We have all respect for those that do not play like that and we really try to stay away from you, but if you tread the big boys' playing field with that attitude we will have your ass.

This is the kind of thoughts that I have issues with, the hell "big boys playfield"?

ask the person that is criticising you what he or she thinks you are doing wrong.

Theres criticism and toxicity. The way "critique" is delivered is important.

[Shirai]

Theres criticism and toxicity. The way "critique" is delivered is important.

To this I do agree, however there is a reason people at a certain point are beyond friendlyness.
When it comes to information about games, including this one, it is abundant. Strategies and minimum requirements for fights and dungeons are everywhere, there are many class and job guides even in the first few google searches and yet people seem to be completely disregarding them for the sake of "I want to have fun".
Of course we can stay nice and friendly and explain to every single person how to play and do their jobs, but there are a lot of people that seem to be allergic to even friendly advice.
And at a certain point, patience with those people will just run out.

As Spawnie has said earlier, the true elitist is a one in a million. The people you call out as one do not deserve this title.
As long as you stay open to criticism, even if it contains a bit of snark and sarcasm, the game will be more enjoyable for both the casual as well as the more hardcore players.