I did offer an alternative. The alternative is stand tall, look ready, keep a hand on the tiller and make sure he knows that he simply cannot survive leading any attack beyond what he is currently doing.
You think this is too risky. I think talking to him is both useless and even more risky as it sends the wrong message.
Poles apart. I must admit I thought it took us two world wars to understand that the most risky thing you could possibly do is stand around wringing your hands and deploring attacks on your neighbours. We learned, supposedly forever, that standing up and saying "Look sonny if you want to survive this just get back in your box", is far preferable to standing around saying "you really shouldn't be doing that, let's talk".