Ask anyone here, the blockchain/crypto part adds no value to this. Better ways to do this. There are banks and credit card companies and they would have zero issues being intermediaries in a scheme like this. They're neutral actors after all.
Which bank or cc company is going to jump on the opportunity of platforming an alternative to twitter that almost definitely going to include content that the institutions already voted wouldn't be platformed.
On the other hand, a fresh network of imaginary credits that perhaps might inherit some value requires no permission and can be setup by almost any entity.
I forgot to tout the banks' other well known qualities that perfectly demonstrate the vapidity of cryptocurrencies. Chief among them, their ability and willingness to facilitate high volume of transactions to a mass of semi-anonymous website users.