I THINK what we hear a lot that "people say" are the extremes on both sides (or the famous, which can mean the same thing). We hear little from some Democratic Congressman from say Colorado, who might well be a pretty rational person, or some Republican from Alabama, same thing. We do hear a lot form zealots, extremists, folks who have worked hard to appear often in the media, and of course officials in higher office, which makes sense, but even for them, we hear more from the folks who like to say ... weird things, than other comparable leaders who sound pretty rational.
Political moderates don't post political stuff on social media, or if they do, nobody pays them any mind. Same with many politicians.