The trolley problem isn’t “settled debate” for the same reasons that Kamala vs Trump isn’t “settled debate”.
The point of the trolley problem and why it’s analogous is that it’s coming up fast and you must choose to either pull that lever or not. Whichever choice you make, that’s the moral character you’ve chosen to exhibit.
What is the moral character of someone incapable of questioning the validity of orphan crushing trolleys?