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.
Critics are very often wrong about the films they judge. Let’s not drag down the OT to try to make the newer films look better. That won’t get us anywhere.
Citizen Kane is objectively a better film than The Room, for example. No one will dispute that. Some films are simply better put together than others. A film is like a piece of architecture. We judge it partly based on our own personal design tastes, but we also judge it based on how well or shoddily it’s been built.