Interesting point. Jagex obviously know the BH method, I'm surprised they've let it go on as long as they have to be honest.
I've never done a RWT even before the trade updates, never payed for or sold anything in game for real world items. My solution if you want to call it that, a solution to how boring/difficult I found the game, was to bot, but I never trusted my account to any gold farming software, just wrote my own. Been playing RS for a little over a year now, so far earned several hundred mil, and can't disclose my magic Xp, because I fear it would narrow down my identity too much (since Jagex have already seen a few of my stats from my YouTube vids). Still botting, and updating my software because making your program public and available for Jagex to inspect brings it's own risks.
Funny thing is, I never used RWT because I consider that to be way more risky than what I do.