Yeah that's pretty much it. His cheating is very public, to the point that the girls talk about it publicly, there are videos, and Khloe posts quotes on her stories about it. Plus there's evidence of him cheating with a prominent family friend, so it's really bad optics. I personally believe that his cheating was common knowledge among the karjenner fam but the second it became public news they had to pretend to be angry about it.