When I read the AA tag for the 1st time I had no idea what it meant so I looked online. I understand the wish to have a new # because of the gatekeeping aspect but I have seen several new ones today + groups and it’s confusing.
As mentioned in the initial post of this thread the # is used everywhere online since 10 years, so I will continue, for myself, to explain its meaning to people wondering about it. 😊