Far cry from you saying he made them worse. He had a drop in efficiency but not in wins. He was back in the finals and took 2 games off the Warriors without Kyrie and Love. The Heat didn't make the playoffs. I agree that they were all helping each other but it seems like they needed him more than he needed them.
He did make them worse. Their volume decreased. And given the fact they all saw a 7% drop in efficiency the following year it proves he didn't help them be more efficient anymore than they helped him.
Pippen missed 10 games that season too, they were on a 60+ win pace in games that he played. So Pippen, Grant, Kukoc, and Armstrong is a 60 win team and you want to talk about Bron's supporting cast?
then the next season they were a 6 seed
He was only 30 years old with no major injuries. Instead things got much worse for him immediately after. No all-star appearances since.