He was himself an incel until his thirties. I don't think he'd be surprised. To an extent, he already knows what's going on with me, given that we speak over the phone for hours every day.
I have the very same reclusive, introverted, lonely personality as him, we're into the same autistic shit, we're almost the same person. He has no regular friends and spends most of his spare time online, my father is my own best friend.
Throughout my childhood I've never seen him bring pals over even once, he never stayed late to drink with coworkers, he never made friends at his job, I'd always see him posting on forums very late into the night, his wife despises him and he's into weeb shit I myself cannot even get into. My father is for all intensive purposes a manchild.