There has not been a single major patch without a critical issue since Endwalker.

[KariTheFox]

I haven't had this problem. We had Crystalline Conflict to farm a whole series for, a Beast Tribe, lots of side stories, an extreme to farm and a fun alliance raid to do each week that was praised by the internet in all areas. If these things are not fun there is almost 10 years worth of content to do instead.

There's also an Ultimate Raid, which from all I've heard is the most interesting Ultimate to prog to date.

The tragedy of developing games is that players are always going to be able to finish content faster than a developer can churn it out. Unless you want to be like Blizzard, and arbitrarily time-gate content behind long, mandatory grinds and scaling bosses to the point where they're mathematically unbeatable for the first week, your players are going to finish the content they're interested in and then want new stuff pretty fast.

But hey, there's other games to play.