I was in NA and it was clear, there was a forced acceptance of them, back in the 1980’s.
I am/was an NA member also. No mention is ever made of it being wrong. In fact, at every meeting at the beginning they read a short excerpt saying sexual orientation doesn’t matter. (I cant remember the exact words).
The funny thing is that many otherwise conservative Christian Churches allow them to met there, although there is more of a movement towards Celebrate Recovery these days.