All jokes aside. You're absolutely right.
Yeah but there will never be a coin that everybody holds forever, people want profit
Yeah man, we don't live forever either. lol
The point he makes is that we need to spend some coins in order to generate value. There need to be a use for it, otherwise it will get to a certain point and folks will just start dumping it. The last ones out will then be the losers. However, if you build an economy around it, where goods/services can be exchanged for MintCoin, then you create lasting value.
Sometimes I wonder if I am the only one who understand what PoS truly is. This is not PoW. Learn the difference!!