Yes, it could be used as a PKSA.
The main problem is that you currently have to manually confirm each transaction.
If this is not a problem when there are actually some financial transactions, it is different for the social aspect of the platform. It would be extremely tedious to confirm every comment or vote.
That sounds logical, but some upvotes are tremendous and I'd like to confirm a 50bucks upvote for sure (if I had one) :))