I think it's a mistake to assume we can assess the assumptions underlying PowPing. It will need filtration and anti-trolling mechanisms to survive scaling and it doesn't have those yet.
But I'm excited for Powping because I have never felt comfortable with the Twetch incentive system. I've tried to like Twetch but I just...don't. Glad to see another option.
I don't know that the duality you're proposing is really accurate. There's a trend in BSV lately to apply "proof of work" in various areas