No, i see what you're saying, seriously.

I love both 2001 and picnic, though i think 2001 is one step ahead.
I'm saying this because even though the story IS barebone and in general not that deep or twisted (not considering all the mental gymnastics the fans do, with interpretations) Kubrick himself said he wanted to "change the form [of filmmaking]" and that was no official interpretation to be made.
So talking about 2001 , i see it as an experiment to shift the focus not on the substance, but on the form, like saying basically nothing, but saying it beautifully.
I see it as a form of meta-art, if you will, kinda like a Funny Games, where the point is not the story itself, but the relation between the film and the audience.
2001 gives you a literally flawless imagery, a photographic perfection, that haunts the audience and suggest nothing and everything at the same time, because it's so strange and beautiful, that it's impossible to not get mesmerized (at least, it must have been at the time) and it works like a masterwork of
suggestion.
And all the themes are there in place to make this work: the space travel into the abyss, the alienating slow paced style, the IA that is more amotional than the humen themself(remember i'ts 69) and at the end, the really beyond-immagination's special effects of the tripping Bowman.
So much so, that IIRC, the older movie goers (At the time) disliked the movie, while the younger audience (we're talking '69, so basically hippies) loved it.