Of course it doesn’t justify those disgusting actions, and that’s not what the comment meant. It meant that it is inadvisable to leave your dog tied up outside while you’re away, because anything can happen to him. As in something bad.
I agree. I am not an advocate of tying up a dog.
I can’t remember the exact words, but I read once that a tied dog just wishes for freedom, and will run at the opportunity, but a free dog just wishes to be home.