[cogwheel]

Considering the list was generated from data, not just the author's opinion, I wonder what criteria you're using for "should".

My guess is a lot more of the general population feels the same (negative) way about it, but your sample of people you've seen reacting to it is giving you selection bias, thinking more people enjoy it

[me_me_me]

not many people have seen it, these days only limited and niche people would see 2001. For that reason the stats on it would be skewed towards people who would view it more favorably.

[ghaff]

It's a film a cinemaphile would watch today for either nostalgia or historic interest. Whatever its place in the film canon (which it richly deserves) I'm pretty sure the random theater-goer today would hate it and I wouldn't really recommend they go watch it.