Endwalker was "meh" (for reasons other than technical issues)

[RyuDragnier]

The devs could cut out all the dungeons and trials and people would say it's the best expansion they've ever played.

If you're interested in the story and lore, this is the best expansion to date. Lots of closure on events and characters, subtle nods to previous events that have happened, even multiple cases of Fridge Brilliance when you look at the story from the big perspective. Example of one case of Fridge Brilliance.

Why was there no mass amounts of Terminus or End of Days apocalypse weather in old zones besides coding reasons? Because you've already taken care of the majority of sources of despair over the course of the previous expansions. You've helped Eorzea itself massively, cured Tempering, stopped a war Ishgard had for 1000 years and helped make peace with the dragons along with rebuilding Ishgard itself, freed Ala Mhigo and helped it get back on its feet, freed Doma and given their people a future to look forward to, and that's not including all the side stuff you've canonically done before now which has helped others. So of course the few sources of despair in the regions would be small, you've already dealt with the main issues they had at every location, leaving the small loose ends storywise for the role quests (your mileage may vary on how well they did those though).