It's also extremely difficult to talk to someone who truly thinks the moon is square. Suppose I actually want to talk about the moon? Or suppose I admit there's a lot I don't know about astronomy (a fascinating subject!), and this person thinks it's an invitation to speak about astrology?

What I mean is, it doesn't even have to affect public policy to be bothersome. It also affects informal small-talk with acquaintances.

There is, however, a rather large difference between "bothersome" and "a bunch of idiots voting for things that are going to kill people, possibly even me... and winning".

Yes, fully agreed, the latter is dangerous. The former is still annoying, though.