We dont even know if a guy like vettori is deserving of a top 5 ranking, yet. I dont care how the first fight with izz went. Adesanya has gotten worlds better in that timeline . Vettori is more a product of the division.
Whitaker v Adesanya is the only fight to make.
Flip side of coin, the UFC has problems - I mean they need to throw title defenses at Israel. Who ?
So from that standpoint, they could lead the lamb to the slaughter in the name of a ppv and the cheddar it brings in.
They have the same problem at 170.