it is. You look at every time hes ever been taken down the control is never in his favor, and He actually only has 5 successful takedowns in his time in the UFC, 1 against Diego Brandoa (WHO?), and 4 against Holloway. Fair credit if modern Holloway, but this was in 2013, and Holloway also avoids the ground in general. Plus all of his losses come via sub. He current sits 5-9 in takedowns, and while his takedown defense is good, once he is taken down its basically the end for him. 2 of his 4 losses come from an absolute no-namer and Joseph Duffy, all via sub. He also only holds a single sub to his name over Dave Hill (WHO?). The only people he has ever had any ground advantage over was an absolute no-namer, and Holloway who was still a rookie at the time all things considered.
McGregor is abysmal on the ground change my mind.