I don’t mean any ill will toward the guy. He’s frustrated and he’s just taking it out in the wrong venue at the wrong people, but that doesn’t mean he’s a bad person.
But he is a bad person. He’s being a fucking idiot and being insulting to the person who made the software for him in the first place.
People like that don’t deserve patience and understanding. Perhaps a good response would be “this software is free for you to use, if you don’t like it then fuck off and make your own”.
It’s great until the cow gets bored and walks off.