All of them being quite dangerous, unhealthy and lead to formation of delusions which are kind of a bad thing that should be avoided which that leads to the topic of companies deluding people and making them feel better by telling them how great they are for achieving basic tasks which they assist the player via visual clues he often is not even aware in exchange for money which once again leads to delusions which are a bad thing but hey to company made their money which is their true goal. You see fun is not as subjective as some like to believe, the reason you are enjoying something can be ascertained and judged whenever it is healthy or good, as well as the consequences of said "fun" has to people around them.
I am sure a person with self esteem issues loves playing a broken class that can 2-3 shot other players in pvp though that is wrong because 1) he doesnt deserve the feeling of victory because he is abusing a broken class and thus his feeling of "fun" shouldnt justifiably happen yet it still happens no matter how wrong that is, 2) this hurts the people around him which in turn makes a community worse.
This game is far superior to WoW in my eyes exactly because it doesnt force people into things they dont like for the rewards, it doesnt rush people, it doesnt force them to deal with an incredibly toxic, elitist and tryhard community, and considering it is doing really well sub wise I am feeling the game has the right direction, because we have WoW to see what happens when the systems you suggest are embraced. (Though I will agree that the predatory, manipulative, elite achievement focused game like WoW is far more profitable because it pushes people to buy tokens for carries and keeps people with self esteem issues hooked to the feeling of being "elite", but like everyone should know by now very well, profitable=/=good game)
So yeah, I think if people want an achievement focused elitist mess, they should absolutely try out WoW, if they want a fun video game that exists to be enjoyed as a whole world rather than hook you via manipulative practices, FF14 should be their choice.
And based on recent mmo population data, FF14 has only been increasing in sub numbers consistently so this casual approach seems to also be pretty successful, especially with many people probably coming from WoW's ultimate tryhard xpac that is shadowlands where they doubled down in the achievement focused gameplay you seem to be fond of.