I think that for most people the best way to radicalisation is to find something that they care about. As fucked up as it seems, I don’t believe we can get everyone to care about the genocide and if we can, then it’s not the most efficient way to radicalisation. If your friend does not care about what’s happening in Palestine (it seems like he’s getting so much contradicting information from you and his father that it’s becoming too complicated for him to form an opinion) then it’s probably better to focus on something else.
You say that he cares about abortion rights which is a great entrance point to talk about the self determination of people over their own bodies that is being infringed upon by transphobes and misogynists.
He probably also cares about his work conditions that he likely has no say over, and the fact that his hard work is used to enrich others. Everyone should be aware that they deserve the fruits of their own labour, it’s something that most people will agree on if you talk to them long enough.
She’s a multi millionaire, not as rich as the others but still definitely not part of the working class.