If Evan were to implement key generation for anyone owning 100 drk, or even 10 drk, where those keys could be combined to run a masternode with other people... someone would only need to own 10 drk to receive trustless payments. Where does that leave your argument?
Edit: buying drk on an exchange isn't so bad, seeing as how you can anonymize them quickly and forget about being tracked...

I have no problem with buying DRK on an exchange.
I have a problem when buying DRK on an exchange is the only option I were given COUPLED with the horror scenario that only Masternode owners were creating coins.