Re: NEM Official Thread - Redemption ends[Updates&Discussion]
In this case, post count is a fair approximation for a proof of work 
There is a big difference between real PoW and your "PoW". The latter can't be verified and statement "NEM devs excluded part of the participants to avoid dilution of their own stake" still remains.
People who have only 1 post in the past year are not likely to be real people. And if they are, then they are even less likely to be able to contribute anything to NEM.
Does this mean that it's you who decides if someone deserves a stake?