Maybe because we're not waiting "15 years" for these shitty 3D polygons?
Y'know...it's a bit different from what the developers actually wanted to do.
Devs can now actually portray their concepts the way they fully intended; motion capture and all.
Final Fantasy VII especially is an example of a game that had ambition like no other. Cinematic presentation; dynamic camera movement (e.g that iconic shot of Cloud looking up at Shinra HQ from Mako Reactor 1 and the pre-rendered BG shifting to a 3D model), action set-pieces (e.g motorcycle chase), extensive cutscenes etc.
Because barely anyone tried it back then. No shit they wouldn't consider the possibilities when no such possibilities were ever made apparent to them.
A regression of what, exactly? Originality? Cause there's plenty of original concepts, story scenarios, gameplay mechanics found in FF7R already and other remakes like RE2.
Is it as fresh and unique as the original FFVII? Probably not.
Does that matter? No.
Star Wars: The Force Awakens basically just copied-and-pasted A New Hope and was still received better than the other 2 films in the trilogy despite how "fresher and newer" they were...
This is all just you automatically assuming the Remake won't have it's own set of engaging optional content.
Good thing the "things" getting done aren't the
same things that needed 100x less time, money and manpower back in the day.
It's not to the detriment of anything else, and the answer is simply; it's a little jarring.
Because KH3 — a game Nomura had to juggle 48 balls to get done, somehow didn't turn out to be the worst thing ever made in existence. Plus, it came out in a reasonable time frame considering when its production actually started...