In my head cannon, that's part of a turning point to get him to see what he was turning into. Thus, I don't remember what happened from then on in the comics. Other points? Early in his career, when he's dealing with Charles and they're debating both a girl they both like (Moira) and Israel & Palestine (can you believe once upon a time, Comics used to have characters tackle questions of ethics etc? Not so much anymore).
Thus my head cannon in the early years, Erik slowly realizes that the trauma he's been through, while showing him the worst of humanity when it comes to differences, also influences his need to protect, now he can. Thus he becomes militant about equality. Granted, cause it's Erik, there's a big chunk of 'separate but equal' thing. But that also makes sense to me, in this context, because it's him wanting a mutant Israel / wanting opportunities for mutant doctors in mutant hospitals, mutant teachers etc - people who understand, who might be less inclined to dehumanize and freak out & be scared, who have a sense of 'my people'. And thus it would incorporate the ones who can't 'pass' in non-mutant society, and thus gives him a very different angle from Xaiver; who to my mind for the most past seems intent on recruiting the 'just like you' and having that PR campaign; your sister, your brother, your spouse. All that stress on 'just like you' - when frankly, it's not true. It's got some basics, but not being able to touch anyone or you'll drain them near death; or kill them into ash, or you look like a demon, or touching you sends non-mutants into a hypotrance etc...; that's some bs.
Even Jean is no longer 'just like' anyone else. Cause as you said. Her very, personal experience with death and mental intrusion and being trapped/feeling trapped and feeling loss like that - is an experience not everyone has and ONLY other telepaths could even begin to grasp.