It’s not even just the fact he’s a Protogen. If you’re not a very strong swimmer, and someone is struggling for their life in the water, jumping in is just going to endanger your life too, as they frantically try to cling on or push you under trying to get air. That’s not to say you should be taking selfies in front of their death however lol. Maybe toss something that floats, or call for someone who has that experience.