So, just so that we're clear, you don't actually have a problem with "superteams," as long as it's management who gets to get the credit for making them happen?
Sure, hoss, whatever you say. Do I think that strong personalities are a thing, in the abstract? Sure. Do I think that strong personalities are a thing, specifically in the way that that term is used in the context of sports? No. The same way that I don't believe in momentum, the same way that I don't believe that there's such a thing as a "humble superstar."
Strong personalities, the way that that term is used in sports, is just a way of mythologizing the athletes. And, more often than not, it's used as a cudgel to belittle whatever athletes the speaker doesn't like. Case in point, Damian Lillard versus Kevin Durant. The myth of "strong personality," depending on who's in the designate hot take role, would have you believe that Damian Lillard, who has more career 60-point games than wins in the conference finals, has a stronger personality than a guy who's been named Finals MVP, twice, because that guy had the nerve to not want to stay on a "treadmill" team. It's utter nonsense.