Because today the film is subordinate to the CGI. In the early days, as is apparent in this oral history, CGI usage was deliberate and each shot received unusual scrutiny, time, and senior talent. And the technology simply wasn't used when the illusion didn't work; the imagery really had to blend with the physical footage. Today, obviously, the same considerations don't apply.
I looked and yes, it was processed around 2022. I’m sure if they tried again with better models it would be better. Is that the future of film preservation?
The source I read also said that the fucking DVD remains the best available copy of True Lies.