I mean, I've interacted with someone with active anti-semitic beliefs in a dedicated debate space who eventually changed his views to "Well, its not the Jews fault that they got into finance. They just kind of got funneled into that." So absolutely people with shitty views can evolve in the right direction. I respect that a million times more than someone who is morally lucky and never budges.

And example of the opposite would be someone who adopts progressive stances of their time and never evolved from there or have selective self serving progressive blinders. "LGB w/o the T", rainbow capitalists, Red-brown alliance types, etc.