So it is TF just another subset of society at large? After all there are many weird self-proclaimed Christian groups widely accepted. Many of them were not accepted when they started out.
Homosexuality is something that is gradually becoming less tabu than before. There are ministers who are openly gay and gay churches are not so unheard of. There is even a movement about legalizing some forms of what could be described as controlled pedophilia.
TFI international already practices all of these things, and at a more regimented level. They have the Charter in case somebody deviates much like the laws in the secular world. So, where is the difference?