Every activity that can be performed by an End-User can be performed by a bot. Excluding of course Capitcha.
They will just rewrite their bots to make a post and upvote it.
I don't say it to be snarky, I am just saying if you close one avenue they can open another.
But if the whale is truly dormant, then someone has to have their key to reenable the vote. This isn't about people who are active and gaming the system, those are being addressed elsewhere, theoretically. This is about people who have set auto-votes up and then they disappeared from the platform. But their auto votes still tick along, upvoting every post for people months after the user themselves stopped being active.
Yeah, I would guess Steemvoter and Steemian have a lot of users signed up that aren't still in the game. It will be interesting to see how it goes.
Best of luck in pushing an idea through.