This was just good branding. The gay pride events came from the stonewall riots and the stonewall riots were in defence of a placed that had among other things, prostitution including child prostitution which is one of the reasons police did their raid in the first place.
The male leadership of these stonewall riots were also involved with nambla.
It's the same line of thought like people that say feminism started for good reasons. That slow progression from reasonable to insane is not something that happened in the world. What they are actually describing is their own stages of grief in accepting that it's bad.
First their denial, then their anger.
Nothing wrong with homosexuality! Why the fuck does it always lead to more molested kids!
Then the bargaining and depression.
Okay but maybe that was just the bad gays and we should have had some restraints on homosexuality, oh god I would have been attacked like Orson Scott card and Bush who argued for a kind of don't ask don't tell?
And finally the acceptance. That being intolerant of homosexuality does help protect children and public health more than it harms those who have to sneak into their secret saunas.