It horrified him, especially if there were ways for those same variants to travel the multiverse and eventually enter theirs. Bruce had much to prepare, he would need to have countermeasures for a lot more things now, including the creature, and many things he never even accounted for.
You guys probably won't care but I'm homophobic as hell, I don't understand why the fuck is gay relationship is a thing. I couldn't understand the appeal and would never ever be.