Do you have any sense? It is nearly impossible to make any argument for anything that makes more sense than them fighting. So many basement dwellers here complain about fighters not getting paid enough so how is there any possibility of either guy making more money than they would for fighting each other?
Islam just obliterated Volk, the only guy with any reasonable challenge to him. Islam also destroyed Oliveira that proved to be a level above the other LW circle jerkers. UFC 300 is coming up and they need a huge headlining main event. Noone at LW has any reasonable ability to compete with Islam. Conor vs Islam for UFC 300 main event fits that bill much more than Mcgregor vs Diaz III.