>>102818288Bryke said themselves that bending populations were heavily influenced by the amount of spirituality in a given community. A more secular town with less regard for the spirit world and for enlightenment wouldn’t produce as many benders as one that had more regard. The Air Nomads were a primarily religious society of monks housed in temples ruled by a council of religious elders - the entire community is geared towards spiritual enlightenment, so all children born within it are airbenders. All Air Nomads are airbenders.
If the Acolytes are indeed focused on the pursuit of enlightenment through air nomad spiritual teaching and culture, their kids should logically be airbenders. There’s still be the explosion following the reopening of the Spirit World, but it shouldn’t be Tenzin and his kids. Remember, genes aren’t all there is to bending: the identical twins from the Fortuneteller are not both earthbenders.
