How much homology vs homoplasy there is dependent on how big the tree is that we are looking at and how far back it goes as well as how many species we compare; as you may know, “placentae” is a big tree which goes very far back with a great many species.
The more time has passed, there will be an increase in homoplasy vs homology.
What is important, however, is the relative proportion of homoplasy as compared to random homology and comparing that to what we would expect if common descent was or was as not true.
@Swamidass therefore should have specified the comparators - specifically, human and chimpanzee as compared to orangutans, gorillas and gibbons.
If you have a look at the following
you can see for yourself this fact which demonstrates humans and chimpanzees have a common ancestor quite clearly.