You are correct...ideally active masternode owners are better than passive. But I think he wants to be active, if he can just find a way to vote more easily. Now that he knows about vote-many using masternode.conf, he can be more active.
I also suggest that even inactive masternode owners benefit the system: higher masternode count in Evolution will mean more masternode quorums available for IX and the like; also more masternodes = more Dash purchased on open market = higher price for all our Dash. At worst, it's a Lose-Win-Win.