Yep, you're not his mommy or his instructor. You're not directly responsible for his safety, or the safety of others that may dive with him. That said, if he harms himself or a dive buddy doing something stupid in the future, you might feel badly that you didn't press the issue a bit. Moreso if you're the harmed buddy.
There was a scene in Top Gun that sort of applies. Once you're in the water and reacting to conditions and events, you may be put in a position where you have to push limits or do something risky because it seems better than the other available alternatives. Before you get in the water, though, you have time to consider the possibilities and plan for them to reduce risks and the likelihood of surprises. Getting back in the water with this guy in a questionable mindset seems like a risk no one needs to take.
Hopefully, when you expand on the events, someone at the dive shop with instructor training will have a strategy to get through to him for a positive result.
There was a scene in Top Gun that sort of applies. Once you're in the water and reacting to conditions and events, you may be put in a position where you have to push limits or do something risky because it seems better than the other available alternatives. Before you get in the water, though, you have time to consider the possibilities and plan for them to reduce risks and the likelihood of surprises. Getting back in the water with this guy in a questionable mindset seems like a risk no one needs to take.
Hopefully, when you expand on the events, someone at the dive shop with instructor training will have a strategy to get through to him for a positive result.