Obviously it's incorrect, but I think its poor reputation is undeserved.
The notion that YEC is harmful and ought to be eradicated is risible, particularly when one considers some of the ideas it's grouped in. Creationism is hardly as bad as racism or anti-vaccination, and several false ideas worse than it seem to get a pass.
Frankly, YEC is a sort of condensed symbol for a certain sort of low church, generally lower class Protestant. A lot of the criticism of it seems to be a pretext for chauvinism and classism against those people. And just so you don't think I'm secular-bashing, this seems to be just as much of a problem within the church as it is outside of it.
Do these people actually still exist? I've never met one in real life.
I know several, most notably my wife. Most of the ones I know keep pretty quiet about it outside of their Evangelical subculture, so it's not that surprising that you haven't met an open Young Earth Creationist, given your religion, location, education etc.