Let's see what happens with the Kings pick and what Fultz becomes, because that could be even more disastrous since it basically constitutes blowing 2 drafts.
Plus, let's say in terms of value right it goes like this:
Tatum
Porzingis (especially considering the injury)
Fultz
Okafor
If that Kings pick eclipses, or is at least on par, with Porzingis then that would be a bigger miss than the Okafor pick.