Raid/Dungeon parties are very serious activites when you consider these points.
(But please keep in mind - such level range and content are optional)
Players who can't contribute and keep the party alive has no place in the party.
WITH SUCH RISK IN THE BALANCE.

In comparison, FFXIV's Lvl 50 cap and with no death penalty, it does not not qualify for elitism.
What kind of risk are the elites undertaking?
No real money invested. An hour of combat at most?
No gear permenantly broken (oh gods I raged so hard when I lost my 2H staff one time at Lvl 138)
None. No justification at all.
None for elitism.
None for ostracizing other players.
None for poor manners.
None for raging at others.

Therefore elitism at lvl 50 in FFXIV is... really empty.
Such players seem to be living in their small, tiny worlds.

Thank you for your attention.
I hope all the continued best for FFXIV's communities worldwide.