No, that's not at all clear, and is in fact unlikely; rather: some of the capabilities in the basket of features Tesla calls "autopilot" are associated with lower crash rates, and it's not at all clear which; there are steep reductions in accidents, possibly exceeding Tesla's numbers, from cars with automatic emergency braking. Just because AEBs are useful safety features does not mean that auto-steering is necessarily on net a safe feature.
The person posted same false fact/conclusion that there is data to prove autopilot is 40% safer all over HN, it looked to me as a misinformation campaign,
You are right though, it may look as a PR campaign but I can be sure, it could be just a misinformed fanboy