You're saying the official press release of the organizers of the parade, that announced the parade, is not a reliable source regarding the announcement of the parade being held? How does this make sense?
Also, Har/ry Hay was the one who led the press conference announcing the formation of SOS and the alternate parade, in support of NAMBLA.
Note that Hay was never himself a member of NAMBLA, but prominently supported them and more generally insisted pedophilia to be central to gay liberation.
Here's a photograph of that press conference, in the collection of the San Francisco library:
https://bit.ly/3LyzPeA
This is a photograph of the press conference announcing SOS and the alternate parade. You can see Hay in the photo. You can also see the signs directly in front of and behind them: "SOS SPIRIT OF STONEWALL: WE MARCH WITH NAMBLA"
Defending NAMBLA seems rather central to the promotion of the parade, wouldn't you say?
No you d/o/ofus, I'm eng/aging with you bc you\'re sp/r/e/ading li/e/s about g/@/y people.
You're lying to defend activists who openly and publicly supported child molestation.