Saying the quiet part out loud now, aren't they?
I'm not likely to vote for someone who would like to 'keep me in line' by shaming me instead of listening to my concerns. Almost every gender-critical woman will have experienced this at some point, over trans issues.
What it leads to when you do it in partisan politics isn't that people will vote for your 'acceptable parties'. They go quiet instead. The 'shy Tory' phenomenon. Advance predictions getting elections wrong because so many people won't stick their heads above the parapet to get yelled at and called evil vermin - but they'll become more entrenched in their views, and they'll vote against the sanctimonious authoritarians whenever they get the chance.
I too had a political phase in which I was convinced everyone on the opposing side was evil, stupid, or both. I grew out of it at about age fifteen, when I actually interacted with adults who held a variety of views and were willing to debate calmly with me. It's shocking to see adults today with all the nuance of my thirteen-year-old self.