Argue long enough with a Linux advocate and they’ll eventually run out of excuses. They know things are broken, they know its not ready for the mainstream and they know it only has 1% marketshare.
As a last line of defense, they will recycle one of the original selling points, its free. It doesn’t cost you a penny (unless your time is worthless, of course). The assumption is that because its free there are no expectations to live up to.
Try offering someone a free lunch and then serve them turd sandwiches, see if they don’t complain simply because it was free.