Mastering for vinyl is a craft. The reason the best records have the potential to sound so good is because the mastering engineers who cut the lacquers are absolutely at the top of their game. Half-speed remasters on virgin vinyl can sound especially stunning.
For those interested in reading about the subject,
this is a very good article by legendary mastering engineer Noel Summerville and is not too long and not over-technical (why I chose it). But I already know the people who won't read it, or other similar articles. They're the people who say they're bored and disinterested in anything that goes on in the studio or mastering suite, why should they need to know what goes on in there, but they're also often same people who spread the most misguided information while purposefully refusing to clue themselves up. Presumably because they don't want to read something written by someone whose business it is to know the subject inside out and who might say something they disagree with.