I think that's a really good observation, RT.
It's something I alluded to in my writeup a bit: I think sometimes teams are given a bit of a free pass if they have a superstar. However, I'd point out that Kevin Durant was titleless until he paired up with three stars. Lebron has never won without two All-Stars beside him. Shaq needed Kobe or Wade, and failed to win a title in 15 out of 19 seasons! Every star player in the NBA has failed to win a title much more than they've actually come out on top. Yet, there's a perception that sometimes these top players are unstoppable.
And, I'm not immune to that bias. I had three of those teams in my bottom five, and I think I indicated in one of my early rankings that my five favorite teams at the time coincided with how I viewed the top five players in the league. Part of that is superstar bias. The other part is that the GMs all put together really smart teams, meaning their team structure was Elite Superstar + several well-fitting star players.
And, for whatever it's worth, the team with the best player in the league missed out on the playoffs.