I don't think anyone disagrees with anything you've said in this post. I think what some folks are saying is that Morey is not going to trade Simmons for an unreasonable return. I understand the argument that refusing to trade him may alienate other players and make them unwilling to play for the Sixers, etc. But, trading away an All-Star for dogshit because Rich Paul Klutch Player Empowerment or whatever will have the same result because the team will be materially worse with no clear pathway to getting better.
Personally, I would hope that even if Morey wanted to trade Simmons for an objectively bad package, Silver would veto it. I don't think that is the likely outcome, but you would think many owners in less desirable markets would not want a precedent being set that players can sign a 5-year extension and then say "Fuck it, I'm out" after one year and get essentially nothing in return. As a Celtics fan, obviously part of me hopes that a divsional rival gets a poor return in a trade, but I also don't want to see this type of precedent set for a variety of reasons. Maybe it will happen and the spin will be that Simmons wasn't worth much because of his flaws and the difficulty in finding the right situation for him or whatever, but to me there is more at stake here than just the Sixers and Ben Simmons' happiness.