Because they can't nerf mage boosting or ban bots or anything : r/classicwow
We need to nerf mage instance farming" - Wrath of the Lich King Classic Discussion - World of Warcraft Forums
New wotlk classic ptr build brings nerf to warriors : r/classicwow
LvL Booster Nerf ist da | Wotlk Release Datum | 50% EXP Buff | Pre Patch Start?! - YouTube
Insane Mage AOE/Boosting Nerf - How to Deal with that? - SOD Phase 2 - YouTube
The nerf to WoD wasn't as impactful as it seemed. Questing is still super strong even if bonus objectives feel significantly less meaningful. Sub 6 hours for 10-50. : r/wow
Mage Boosting May Be Nerfed in WoW Classic Seasonal Realms : r/classicwow
Relic of the past V nerfed or broken?
Boosting / AoE Farming Nerf Now Live on TBC Classic Servers - Warcraft Tavern