I think you're confusing two very different things. Yes morality is subjective and mostly bullshit in the way that people pontificate about it. But are you really gonna start philosophising when someone is in imminent danger and you can do something to help?
That's what I'm talking about.
Well no, but I assumed that’s what we were doing here.
What I would do would probably be more or less instinctual, but I at no time would think of my actions in terms of “morality”. I am always fully aware that everything I deliberately do is ultimately for my own purposes. I certainly wouldn't do anything just because “it’s right”. There’s always some more practical motivation, even if it’s just to look like the good guy.