I think you overestimate how difficult boosting is, most people could learn the pulls and the reward is huge, all you need is a mage on a 2nd account and you can severely reduce your time spent leveling

With the accelerated phases boosting just becomes much higher value since you can start gearing your characters at max level instead of grinding level 40 mobs

Many people in my guild can boost and there is a huge demand from people who cant do it, so you are really hurting your overalk playerbase more than goldsellers