6. PoS
What? PoS is potentially the most revolutionary development in cryptocurrency tech since Bitcoin. Just because some people have taken advantage of the hype doesn't automatically brand any PoS coin a 'shitcoin'.
I said earlier that no one of these is determinative. But as you say people take advantage of the hype and heavily promote coins without any serious assurance (at this point) that the technology is even sound. That is a strong indication of shitcoin status to me.