Since Dash is not messing with the emission rate schedule in any way, there is no inflating of the supply.
Nice one in arguing a point I wasn't making.
I was pointing out that inflating the supply on a purely numerical basis (as Dash will do with 60% of its supply) as opposed to exposing every block to compatitive mining is something the the (store of value) market does not like.
Remember,
a masternode is just a miner with a zero cost base.