Your friends and family might not be vocally bigoted, but actions speak louder than words and if they're voting for a party that platforms on racism, sexism, and transphobia, then they are bigots. I hardly think it's childish to avoid dating someone who would support a party that wants to strip your rights away.
Also, Lemmy has always been like this. You came to the wrong fuckin' place, my dude.
Good lord the replies to this are sad. Believe it or not it's a perfectly reasonable expectation to only want to date someone whose core beliefs align with yours (and, y'know, actually respects your rights as an independent human being.)