From Russia's POV, Western imperialism and LGBTQ+ has become synonymous, and this was no accident. Just look at the Lockheed Martin funded pride march from a while ago...
Edit: I'm not trying to make the claim that Western imperialism and LGBTQ+ are synonymous, rather I'm commenting on how Western capitalists have co-opted LGBTQ+ movements and imageries, and this would have the effect of compelling Russia, or other global south countries who sees this, to stray towards a less LGBTQ+ tolerant direction.
I've read various comments on Reddit and Lemmygrad stating that the LGBTQ+ movement is heavily pushed by the state to provide a distraction to the workers from their economic immiseration.
I don't know how true that conjecture is, but it does feel really unsettling how much the imperialists are pushing for it.
LGBT+ people aren't an "agenda". Yes, it's true that the state tries to co-opt their identity to pink wash itself, but like with any sort of radical history, it tends to get co-opted.
Look into the history of events like Compton cafateria and Stonewall. LGBT+ history is just as much a part of worker history as any other group's.