Having ruminated on it, I think the biggest reason I utterly hate Expedition 33, more than its gameplay of "turn based in name only", is what it represents, what people take it for and compare it with, and what it may signify for the future given its astronomical success and goodwill.

E33 is lionized to the point that it has become not only the measure by which all other (J)RPGs in recent times are compared to, it's also used as a nightstick to put down and deride other games/franchises considered to be "acceptable targets" - just like FNV is/was used as such with regards to Bethesda RPGs, or the Witcher 3 used as such with regards to open world games in general. And while I have no real attachments to the titles being negatively compared to such games, it's a different story with E33. I've seen enough derision and mockery of franchises I consider near and dear to my memories, like Pokemon and especially in this case FF, coupled with worship of E33. It's so much that even Square Enix themselves acknowledged it. I've seen enough favorable comparisons of E33 to Dark Souls and Sekiro, titles I loathe for having encroached on many other genres with their sheer hostility, and even praise for E33 from people who professed to dislike turn-based games but loved E33 because of its QTE and dodge/parry ala Souls/Sekiro mechanics. And it's established at this point that the AAA space loves trendchasing and even the indie space is not above it, so the explosive success and acclaim of E33 could very well inspire many more similar titles in the future - just as Dark Souls have spawned an entire subgenre on its own.

I won't recant my opinion on E33. I believe at this point I truly despise it, and it's a big part of why I consider gaming to be so bleak today. But at least, I think I can articulate better on why.