I'll take the bait.
Because it's wrong? For example the amounts of jrpg mimicking early Wizardries is very big as well, then there are all the action ones, the materia or something similar is really not a staple of jrpgs, classic SMT are classic SMT, Persona are Persona, SaGa are SaGa, Tales Of are Tales Of, Atelier are Atelier ...
Dragon Quest series is simlar to Final Fantasy in many ways and many JPRGs follow the legacy of Dragon Quest 1. Presence of trash random fights have nothing do with FF7, abstract turn-based combat inspired by Wizardry has nothing to do with FF7, all games used those and those who didn't either were shit or were more action games which were considered less cool, think Secret Of Mana vs Chrono Trigger, the cool game was always the latter. And for good reasons in my opinion, RPGs should have turn-based combat, not action. Stupid ways to unlock optional content is linked to selling guides in Japan. FF7 does not have the utter retarded modern anime art. Many SNES JRPGs have the kind of protagonists, casts and plots that FF7 have.
Hollywood presentation with a mixture with cutscenes and a lot of cringy dialogs (plots were kind the same before, just, overall, no thrown at your face cutscenes and a line of dialog here and there, often very few actual dialogs between your characters, making them more of your own, that's completely different) was amplified at the time, that's a terrible trend, I hate this stuff, and even many of the series I have mentioned followed the trend, and I give you that FF7 is by far the most symptomatic game of this trend, and I think that saying it's one of the first is simplifying but not totally disingenuous.
The big budget and aggressive marketing campaign of FF7 are a thing. Its success is a thing too. The thing is, whether it's due to using the features that people wanted at the time, or that it went successful then everybody used the same features regardless of what people really wanted, is always a complicated topic but let's at least agree that if it did what people totally did not want then it would not have been such a big success. Claiming that in the alternative reality where FF7 does not exist then this does not happen is bold, in my opinion, judging by various discussions about the game I'd even claim it's exactly that cutscenes and cringy dialogs that people wanted and liked which is something other games would have obviously done, there's nothing original about games wanting to be movies, and the worst possible way, FF7 did not bring something to the table which would change the genre, if FF7 did not exist then the genre nowadays would be the exact same.