Without Masternodes they would either secure a shitcoin without value or they wouldn't even bother to mine it.
Masternode network is what gives Dash value. Darksend and Instantx is there thanks to it.
On this I agree, but the rewards are grossly excessive for the services provided.
I showed the high school level probability math that masternodes make InstantX insecure. I've already retorted the "why don't you break it then?" bullshit, so I won't again.
Masternodes destroy the network effects that a coin needs to attain adoption. I had already explained why, so I won't again.
The Dash scammers and accomplices are always trying to spin their scam as something other than a scam. Sigh.