If their conclusion is correct (and I have no idea if it is or isn't), the quite obviously that statement is a generalisation, and a perfectly fine use of one t

If their conclusion is correct (and I have no idea if it is or isn't), the quite obviously that statement is a generalisation, and a perfectly fine use of one too. It quite clearly means "as a general trend", not "in absolutely every case". Did you honestly read that and think "aha, I can think of somebody who doesn't fit that statement, they're clearly wrong"?