He was already in the “pantheon of greatest ever,” he was actually just underrated in the second half of the 90s with the emergence of Griffey and Thomas and then the McGwire/Sosa thing. He should have won 3 more MVPs in the 90s and he was a first-ballot HOFer if he retired after the 1998 season.
What happened from 01-04 was one of the great players of all time deciding “you know what, people want to see numbers, I’ll show you some fucking numbers.” In an era of widespread PED use in the late 90s, he was still the best player in the game. When he started using (leveling the playing field, you could say), he was the best hitter of all time. OPS+ measures how good he was relative to the league…from 01-04 he posted OPS+ of 259, 268, 231, 263. He was 150% better than league average - which accounts for lots and lots of PED users - over a 4-year span. Yes, PEDs boosted those totals. But relative to a league full of users, he was on a different planet altogether.
I get that all this is beside the point to a lot of people - “he cheated” is all they care about. That’s fine and all, but I think you have to consider that MLB did absolutely nothing to enforce the “rules” back then, half his peers were doing it and being rewarded for it, and baseball itself benefitted from it. The climate was just different in that era. So fine, he used PEDs the last few years of his career, discount his production in those years by however much you want - 50%, 75%, hell 100%….he’s still a HOFer.