I think Embiid being down make it is more important, not less, that Morey get on the stick and make this team better.
The entire premise of winning with Embiid has always been to give him a team where he does not need to play max minutes and carry almost the entire offensive and defensive load. Morey has done that in pieces, but never fully achieved it.
The time for patience and waiting for next year is over IMO - you have a very limited window to maximize Embiid + whatever other talent you can gather and the clock continues to tick away.
It is all-in now or, if not, you're better off trading Embiid for whatever value he has left and building around Maxey. Obviously, this works best if Embiid can come back for the playoffs, but regardless Morey should do whatever he can to improve this team and help them make a run this season.