Do you think that sort of attitude only applies to people of a particular bent, or could it be the case that BLUE NOSES occur in all venues on all sides of every issue?
First you have to discover who the ESTABLISHMENT is, and what the received standard of behavior they promulgate might be. Then you can determine who the BLUE NOSES really are.
Here, the PTA argues that if you are once a gay, you are always a gay. It's clear the PTA is the ESTABLISHMENT and the received standard of behavior is "gayness". Ergo, the PTA are a bunch of BLUE NOSES.
It's fundamentally none of the PTA's business who does what to whom with which and where provided it's not in the school.
So, let me say it again, it's none of the business of those BLUE NOSES in the PTA what sexual behavior people indulge in.