Yeah, but D&D has changed since those wargame days. Alignment doesnt so much describe which side you’re going to take in extraplanar warfare so much as a loose combined ethics/personality test.
And at this point it’s pretty vestigial. We don’t need it except if you are specifically looking for a shorthand label for some key RP elements. And in that case many other methods of shorthand description will do, and ‘alignment’ ends up carrying unnecessary baggage.