I’ve already seen opinions of TFA and TLJ improve.
The OT is revered because it’s a well made set of films.
Art is subjective. If the OT was as objectively well-made as you say then why did places like Time Magazine and Empire Magazine shit on ESB when it was new? We also mustn’t forget that a lot of people also crapped on RotJ up until TPM was released.
Art is subjective, and the quality of a movie is subjective. But the OT is undeniably popular, and not simply just because it’s old or because le Star Wars fans are le dumb. It’s also incredibly influential, in a way the PT and ST, like them or not, never will be.