Can anyone clearly explain "job homogenization" in this game?

[Carighan]

I'll leave you with one question though, how exactly does the same timing = the same task? How are you going to say nin is homogenized with drg or sam or reaper? How about blm smn rdm and pict? How about brd mch and dnc? Do you even play this game? I don't think you do outside of limsa lominsa + mods.

Look, at this point the problem of trying to answer your questions is just this: I can explain it to you, but clearly - because it has already been tried - I can't understand it for you. That you aren't able to understand such a simplistic concept of MMORPG class homogenization and how it looks, feels, appears and why or how the latter happens is not our problem. We all understand this stuff. Because it's that basic.

[HikariKurosawa]

Look, at this point the problem of trying to answer your questions is just this: I can explain it to you, but clearly - because it has already been tried - I can't understand it for you. That you aren't able to understand such a simplistic concept of MMORPG class homogenization and how it looks, feels, appears and why or how the latter happens is not our problem. We all understand this stuff. Because it's that basic.

So, you can't do it.