Where do you get that from what Blizzard said? Selling services is fine. Services like carries, ports, summons, etc. Nowhere has it been stated that selling raid items is allowed. The only thing stated about that was
and their GDKP policy is still simply
World of Warcraft Classic Anniversary Realms, Hardcore, and Season of Discovery
Selling raid loot for gold (GDKP) and boosting are not allowed in US and EU realms.