Oh man, that’s not the gotcha you think it is, The Onion is a satire site, they’re actually parodying opinions like yours, did you even read this so called proof? You certainly didn’t check the authenticity of the website in question.
Not even that far down was an obvious give away: “The parade, organized by the Los Angeles Gay And Lesbian And Bisexual And Transvestite And Transgender Alliance (LAGALABATATA)”
You might be born yesterday if you think satire directly saying your own talking points is effective at proving those points. I feel like you just googled “pride sets back gay movement” and either went with the first link, or after finding out that there is seemingly no evidence or any form of actual research to back up your claim, you went with a satire website.
If someone replies to someone saying “idk why people are disagreeing with you” and then provides a link to a website, that strongly suggests to me that they’re giving proof as to why the people who are disagreeing are wrong.