Yes, it's aggravating when someone throws your well-founded advice in your face. It's totally understandable to be angry because of it. But that isn't going to help change anyone's mind. It just makes them more likely to go off and do whatever they want. They'll then ignore your advice simply to spite you for getting angry with them. It's more helpful for the person and their snake to be nice and state the possible consequences of doing things their way. Then it's up to them to listen, because you did everything you could at that point.

I wouldn't get angry because I'm concerned for their snake if nothing else and they definitely won't want to listen to an angry, rude person.