Mugetsu Ookamiza
you know, that kind of mindset makes the most sense online (altho even then it's pretty nonsensical)... but the sad thing is I've dealt with grow adults offline who acted pretty much the same (seriously, back when I was working as a people greeter at the Sam's Club where I live I had a Hispanic guy go ballistic on me saying I was being racist for asking him to show his membership card when he came in, just like everyone else had to).
Part of it was probably him giving you a hard time to see if he could get in for free. People like to do that.
In actuality, adults don't grow up as much as you think they would. So, if they're ignorant as a child, they'll carry those ignorant traits well into adulthood.