I don't blame Diego for doing that. That was as blatant an illegal knee that you'll ever see & the dude deserves to be DQ'd just for trying to claim it was legal.
I thought he could have continued but nobody really knows how clear his head really was because that knee landed flush.
We have to stop rewarding these fighter who do illegal things because it's been proven emphatically thru the years, & pointed out by Dana White himself, that fighters who get fouled, where the fight needs to be paused by the ref, lose a disproportionate amount of the time.