I wouldn't consider frogs changing sex to be "gay" , so it's not exactly true. But yes, the basis of the claim ("does something to frogs") is correct and arguably worth being worried about

Always half truths.

It was batteries in the gulls.

He wasn't telling the truth at all, he just made up a bunch of lies that had the vary base kernel of truth that he could use for his psychotic narratives.

That's Jones' MO about everything, and you can hear him vamping and making shit up after he finishes cold reading a headline (or in the middle of it).

It's true that agricultural runoff was introducing chemicals to waterways causing frogs to change sex. The issue of pesticides washing off of farmland into waterways and having devastating effects is a very serious issue that needs a spotlight on it. Our "good" "friend" Alex Jones took this singular kernel of truth, discarded the entire ecosystem angle, and told his followers that the chemicals were being introduced deliberately to further the LGBTQ agenda.

I'd still call that a lie.