I'm the opposite and maybe it's impostor syndrome but I'd never apply for a role that has a way out of the ordinary salary. I usually have a range in mind for what I consider fair and decent compensation for my skillset and if I get an offer that's a bit higher then it comes as a nice surprise.

So I can kinda see how not advertising above the normal probably allows them to attract decently skilled folks who might not normally apply for a 200k+ job, and they might actually be better. And of course for the applicant when they get that healthy offer they didn't expect everyone wins.