Dadaism inspired Warhol. The Dadaist movement was shitposting and asking questions about what was art and about perspective. It also inspired surrealism which did similar things, often more pleasingly.

Warhol though was basically the capital friendly version of Dadaism (which was largely socialist like surrealism). I don’t like his style of pop art, though I do like the more old school comic book style pop art. I find it to be a lot less interesting than surrealism for example (which was always my favorite art movement), but it’s an aesthetic that I associate with my grandma so I can’t hate it even if I don’t find it nearly as deep or interesting as other forms of art. And as for what he was trying to say, that a lot of our commercial and mass produced world is artistically interesting in its own way. Which yeah, far more friendly to capitalism than a signed urinal. I don’t think he deserved to be shot for his aesthetic failings, but someone did.