Exactly, it's all just the rules of "proof of stake" - but to say the goal of the down-voting happening is to "protect the rewards pool" and make it (like the stabilizer) sound like some grand gift to the community - while raking it in.
I'm just providing evidence and a bit of snarky commentary, I leave everything else to the reader :-)
RE: The main excuse for malicious down-voting is "Over-Rewarded Content..." What about the account making $10k+ PER DAY in spam comments?