"You can still help Steem by voting the other the other witnesses and just leaving him out."

That is true! But I think we would all be much better off if most Steemit witnesses are removed. While @themarkymark may indeed be one of the worst Steemit witnesses, he is by no means the only scumbag who has used his power to downvote other members in order to boost his own curator rewards. This is something that many Steemit witnesses (and other high-reputation members) have done, and I think it's time to get rid of them all, or at least as many as possible. Sure, one bad apple may not spoil the whole barrel, but when the number of bad apples gets to the point that its very hard to tell the good from the bad, I think it is better to completely empty the barrel and start over.