It can be called BTT as many people refer to it as BTT.
Just because many people say something wrong, it doesn't make it right. By perpetuating it, you are only spreading what is wrong.
Without the signature campaigns, many members would continue to write on the forum but there would be a serious decline in quantity. You can see many members without signatures writing on various topics. They may look few because they don't write very often as others, but in fact there are many users without a paid signature. You can think about what the overall forum will be like by looking at the messages in the sections where posts are not counted for paid signatures.