They're not doing anything against ToS, as annoying as it can be to other players. Bringing attention to the characters only encourages the behavior to continue.

You do have options:

Go to another city if there's no quest involved.

Use world visit and go to a different Limsa if a quest is involved.

Get a large group of friends together, create new MRD or ARC lalafells and start licking their Weeaboo kneecaps as soon as you finish the intro quests.