I reached out to our UI and accessibility teams and we’re investigating this.
In general, we agree that accessibility is important, but that doesn’t mean that every effort to stop automation or botting is an attack on accessibility. There are lots of game functions that the game requires a hardware event for, and it makes sense for /follow to be added to that list, based on the behavior Kruffzz suggested. We’re targeting that change for both Wrath of the Lich King Classic, and Dragonflight releases.
Before making decisions like this, we reach out to gamers with disabilities. To be clear, the change we’re planning will still allow a disabled player to follow a guide, including through the use of a Macro or UI Mod to issue the follow command. The behavior it prevents is for UI Mods to initiate a follow on their own based on receiving a message from another source, such as a message from another player.
Thanks for the suggestion, Kruffzz!