The OT was specifically designed to not be slow paced or spend to much time showing the scenery. Lucas said himself that he didn’t want to linger on the alien landscapes and crazy special effects more than necessary. He wanted audiences to take it for granted, as if they lived in the galaxy all their life. And those films are only (relatively) slower paced in retrospect.
Exactly. It’s really funny, last year I watched Star Wars with my dad and he said “oh god! Such a fast paced movie! Hahaha” (he’s 73). I then went on to watch Star Wars again with a friend of mine, and after the movie was over she said “well… that was a bit slow, wasn’t it?” (she’s 18).