I'm going to disagree with that, at least as far as the Miami-or-bust strategy. The 'threat' of Dame sitting out is less if he's risking 216M in contract rather than 94M
And, if he had a more open list of preferred destinations, teams aren't going to line-up to make big offers for him if they expect him to perform like a low-level all-star. They would make big offers only if expecting him to perform at an All-NBA level, like his last 5 healthy seasons. So, if he's traded to another team and performs to expectations, then he's going to want, and expect, a super-max extension from that team, and it would be for 3 seasons, instead of the 2 seasons his current extension is. In that regard, his extension could save his new team the head-ache of negotiating an extension. Might actually represent more value, rather than less