The trade options that have largely been discussed by the media and fans alike certainly wouldn't be in the ballpark if Simmons hadn't demanded a trade, if the Sixers hadn't thrown Simmons under the bus, if Morey didn't announce that he wanted the sun and the moon in return for Simmons, if Simmons hadn't held out as training camp began, and if Simmons hadn't begun poisoning the locker room upon finally reporting to the team. The situation is toxic all over, and neither Morey nor Simmons nor Embiid have done much to aid the Sixers in bolstering their bargaining position. It seems like every week that passes, someone says something or does something to make it worse.
In a vacuum, yes, Ben Simmons is worth quite a bit more than Buddy Hield/Marvin Bagley/future first rounder. But NBA trades never occur within a vacuum. You need a team willing to trade for a player who has become toxic, and you need that team to have the kind of asset you're hoping to receive in return, and you need that asset to actually be made available in exchange for the toxic entity you're attempting with which to part ways. If that team and that player don't materialize because of factors like those I mentioned in the previous paragraph, well, then you have to take less than what you desire or suffer the damage to your locker room and risk alienating those in it while still trying to pursue a championship as the distractions pile up. Good luck in that scenario.