What's the deal with all these masternode coins? Isn't it just a different way to provide Proof-of-Stake rewards?

Yeah sure it keeps the supply put aside to run the masternode, but this artificial supply decrease can only last as long as the market is in a bull trend. Once the market tops out... the house of cards are gonna fall so hard and people gonna wish they didn't have money stuck in masternodes making more coins that are dropping in value more than you can earn from rewards.