Each group is autonomous.
So you cannot tell anyone they are "out of AA " as such.
But it's perfectly fine to kick them out of your group.
The 3rd tradition is followed in the preamble by "there are no dues or fees " etc.
Its just telling people "this is not like joining a golf club or country club or paying to go to a private rehab"...... It's free.
It was never meant to make AA groups go "Oh, you have a desire to stop drinking........ Great, please avail yourself of any young female members here and treat this place like a dating service."
Screw that. Kick em out, tell em they aren't welcome if they can't behave decently.
Each group has the right to protect its members, if they are being preyed on.