It’s not that politics kinda don’t matter, it’s that they are so important, no one can be trusted to have the best, most clear, unbiased view of things.
Most everyone nowadays seem to wander around thinking their views are obviously correct, and the people who disagree with them are either ignorant, immoral, or arguing in bad faith.
Rationally that doesn’t make sense. No one knows everything, and everyone has blind spots. Most people are doing their best to have decent opinions.
So we have this kind of genius political and economic system that assumes everyone is going to be biased and small minded, and mostly just act in their own interests as they perceive them, and yet things mostly come out pretty ok.
With that in mind, it follows that corporations should mostly just pursue profits, even though that doesn’t sound right. But certainly they should not take stances on the “issues of the day” ... especially if they are publicly held companies.
Your scenario doesn’t make sense because our system is designed so that voting and legislating and regulating and so forth address the hypothetical Hitler problem. The corporation has a different role to play.