Short notice is fine, much less chance to pick up injuries, you are more fresh. Masvidal is a vet and has been fighting forever, he ain't gonna lose any skills or talent on a short camp or long camp. The only thing the long camp will do is give him more possible injuries. Better to be fresh, the wins vs loss records of short notice fighters is about the same as full camp.
I agree that maybe a short camp is not good for a guy who is very raw and not fought a lot, but Masvidal has been fighting since forever, I don't believe it will make any difference apart from the fact he may have less injuries and bruises