To normies what is "tinfoil" today becomes truth tomorrow. The information is out. It's all about spin now. The more they spin, the more they have to talk about the topic.
I slowed the video and it shows the fingertips either lightly brushed his lower chin, actually more under the chin, or there was no contact at all. Also Rock leaned forward and froze in position so that the fake slap would be a success and not putting himself in the position to actually be hit.
Missed the chin (or fingertip barely brushed) looks like the fingers of the open hand passed UNDER the chin.