Nobody cares that he was held against the cage and foot stomped by the wonderful Robert Whittaker. Same people hate Usman for that.
That bad beating he got from Rockhold and everything that followed puts him firmly outside of top 5 in my opinion. He has 2 fluke wins over Silva (broken leg and clowning), but didn’t do much outside of that.
I’d take Silva, Izzy, Mousasi, Romero, Whittaker, Henderson and perhaps a few others over Weidman.
On a side note, the clown who started this thread mentions Khabib so not sure if he even refers to MW GOATs.