Ok but hear me out, most of those tens of millions of voters don't think the Democrats will save them, it's just if you have any political stance other than white nationalist, they are the only viable alternative.
You a lefty or a centrist? What are you gonna do, vote green party in the nationals?
"Blue no matter who" isn't a rallying cry of solidarity, it's really saying "We're the best you've got, so vote for us even if we suck"
I think that even if you're talking to a lot of people, given our interaction, it's a blind spot for you. People may just give up and not talk to you when you are being condescending or just not day anything because they want to be polite. It's a little presumptuous to say "well most of the time it isn't a problem but since it's only come up once or twice I don't have to respect these people to acknowledge what they are saying and can just double down on educating them."
Maybe then people won't assume you're being low-key racist and call you out on it like I did.