The Miami Heat are what they are, in large part, due to what Coach Spoelstra gives them.
None of that matters as much right now though. The point here is this.
The Miami Heat are able to fool everyone, they are able to make a run to the NBA Finals last season in the NBA Bubble when they have absolutely no business, and they are able to consistently over-achieve with less actual talent than other teams, in most cases, because of what Coach Spoelstra means.
Furthermore, the security, tenure, and consistency that he has as the coach of that team and the co-head of the basketball part of that organization is a large part of what allows him to be him. In an NBA that is the Wild Wild West when it comes to head coaches and their security, that stands out.
The Indiana Pacers situation has been murky since the middle of the season, with Nate Bjorkgren practically knowing he was in an uphill battle for just a mere chance to keep his job. The Dallas Mavericks have somehow found themselves coachless after longtime coach, Rick Carlisle, stepped down on his own volition, so is the word.
He also made it a point to let it be known that he isn’t done coaching, he’s just done coaching in Dallas. The logical thought is that he sees himself as getting ahead of whatever could be in the future, perhaps a firing for “poor performance” or tension between he and Luka Doncic, maybe?