The problem you're running into is that they are not throwing AP's out just for vulturing per se, but throwing everyone who vultures out also succeeds in them getting out most of the people who they are actually worried about. They're probably worried about the two general types of, "Creators," more than anything.
I should also hope that much of this is confined to high-limit areas, but I guess you never know. It's especially hard to say with MLIFE, from what I've heard. I would definitely understand it in HL rooms on the Vegas Strip why you wouldn't want those players fucked with if you're the casino. Even some local casinos I am familiar with have a sign in the high-limit room that it is for, "Active players," I'll take a picture of such a sign if you like. For that, I just have a ticket in my hand when I go in for a couple hundred, stick it in the first machine I want to check and then play a hand or two as small as possible if it looks like anyone is paying attention to me. It usually doesn't come to that and I'm about 99% sure they don't care about me, anyway, but no harm in taking precautions.