Yep, definitely basketball karma for the ridiculous product they've put on the floor the last three years.
Here's the thing, while it does "sort of" clear the logjam a bit for the bigs, all that means is that either Okafor or Noel is going to just play more time out of position at the 4. None of Embiid, Noel, or Okafor can really play the 4, so it's just basically going to have them playing out of position once again, which will hurt their value. If anything, they needed one of those three to go down, not Simmons of all players.