Which "logic" is that? Which grapplers Israel fought? Don't say Brunson lol. Yoel, that one that never used wrestling against opponents short of against Weidman? Come on, this is not an argument. If so, Alex fought Michailidis if that counts. Of course Brunson is better, but Michailidis is also a wrestler and tried to take Alex down since the beginning of the fight.
If there is someone who needs to fight Khamzat, that's not Alex for sure, but Adesanya himself. Him as a champion needs to prove a point against real wrestlers. For instance, Anderson fought Chael and even at wars he won both, not counting the other wrestlers before. Which grapplers/wrestlers Adesanya fought? He is the one who needs to prove a point against wrestlers before asking anyone to do it.