I almost got into a discussion about Marginal Tax Rates with a friend the other day after she posted a misguided statement on Facebook, but then decided it wasn't worth an argument based on similar items from the OP that I've seen, where people just don't get it.
Amazing how poor the financial literacy is.
More amazing, to me, is how people are unwilling to learn. They hear it "kicks you into a higher tax bracket" and think that they should try to earn less money.
It's unfortunate.