The roleplay of "lalafell menace" is just a cynical cover, if it was just a roleplay I think most people take it as a joke, and they do.

Because they all don't know they actually show up and block the spots Lalafells gathered in Limsa. That is bothering players who have nothing to do with them for their race of choice, and not a roleplay. Saying "it was just a roleplay" is one of the oldest tricks in the book.