In my short time at hubpages, I've seen absolutely stellar hubs, average hubs, and bottom-of-the barrel hubs. Although I'm not a fan of the Make-Money-Online hubs, I'm also aware that a few of our best hub-writers make a reasonable side-line income from their avocation. And I don't begrudge them that.
I can live with the prohibition on the advocacy of gambling. My concern here is the slippery slope of the quality continuum. If we ban certain classes of MMO hubs today, what are the targets down the road? Political incorrectness? Saying something negative about anything whatsoever? Incorrect grammar, spelling, and punctuation on the part of hub authors for whom English is a second or third language?