Looking at ffcollect, the desire for difficult/high end content isn't really that high. Even "easy" high end content like Alexander (Savage) right now only have 52% completion and lesser the closer it is to current expansion.

https://ffxivcollect.com/achievements/types/1

I think most ff14 players play for the story. 85% completed endwalker vs 11% completion of current raid tier

https://ffxivcollect.com/titles?q%5B...=shadowbringer
https://ffxivcollect.com/titles?q%5B...t%5D=endwalker

Doubt there will be any real impact on game population health if MSQ/Normal level content difficulty is ramped up or not but the stats show that most ff14 players aren't that about playing a game because its difficult or easy but treating it as another rpg in the ff series.

For now I guess anyone can manipulate the difficulty setting and find like minded people via pf to enjoy the game this way tho