Some people have always been there. That doesn't mean they got there because not being homophobic is a slippery slope.
Your video seems to be about a pedophile who is upset that the LGBT community isn't inclusive of pedophilia. I don't understand what point you were trying to make by linking that.
The point is that that some people are already using the good ideas like tolerance about what people do in the bedroom to sneak outright pedophilia in there. Where you see someone complaining that not everybody accepts it, I first and foremostly see someone who does accept the argument they are making, otherwise they wouldn't be making it. That doesn't not count just because not everybody on the planet agrees with them. And if you think that's just the one person that exists, rather than an example for many persons that exist, that's a very bold assumption.
And in Germany for example, there is quite the long and sordid history regarding that, among other things with people trying to legalize "consentual" [sic] sexual relations between minors and adults, but I don't know if there is anything thorough in the English language about it:
And that was directly in the wake of working against discrimination of homosexuality. For some naive people, it all fell under the umbrella of "being different sexually", and for pedophiles, that was how they tried to get a foot in the door.
This sentence
> Die Debatte über die Legalisierung pädosexueller Akte ist historisch eng verbunden mit der Forderung nach Abschaffung des § 175 (StGB)
An article about an article that appeard in 1979 in the taz, declaring pedophilia is a victimless crime in the title. One sentence from that:
> Bei einem Blick in die Archive wird klar: Teile des linksalternativen Milieus sympathisierten mit Pädophilen - zumindest boten sie ihnen einen ideologischen Rahmen.
translates to
> A look into the archives makes it obvious that parts of the alternative left scene sympathized with pedophiles - at least they provided an ideological framework to them.
So, that already happened. And it absolutely was fueled by being overzealous about being liberal and progressive -- that's not what made anyone a pedophile, but that's how some people fell for the schemes of pedophiles, and let themselves and their networks be used. That's a fact. I'm not familiar with similar things in North America but I wouldn't outright bet on not finding anything if I had the nerve to go looking, which I don't at this time.
edit: there's ignorance, and there's active suppression of information. what a cesspool.
https://www.youtube.com/watch?v=vux3-uFNtLw