Are all assholes male? No. Clearly not. You are quibbling, Roger, about a phraseology typical to the English language for a very long time, until recently in fact, when people began looking for gender offences under every possible twig, rock, and leaf. MMario has already explained it succinctly. You are looking for an offence where none was given or intended.

The statement you object to is simply correct English grammar, period. It does not imply that all assholes are male, except in a mind determined to find offence where none exists.

I think that your objection is a bit like an atheist objecting to a variety of common expressions such as "God knows..." because he cannot abide anyone using the word "God", as it offends him! Awwwww....the poor, suffering atheists, having to put up with such a terrible situation... ;-D

In other words, I think you're being just a wee bit silly.

But, hey, that won't stop this thread from hitting 50 or so posts, will it? With luck, maybe even 300 posts. Have fun. ;-)