Change takes time, decades, often centuries. You are asking a society that has norms similar to 100years ago in Europe to accelerate to where the West currently is. I dont think you understand how slow things improved for lgbtq in the West and how recent that change is.

Despite things not being perfect, lgbtq acceptance is 50%+ in most western countries. That means it usually isnt socially acceptable to go against lgbtq, neither for the people, nor for the politicians.

Now imagine a society whose people oppose lgbtq by 95%. Who is going to stick their neck out? Their neck will simply be chopped off. Change will take time. Slowly those lgbtq people will make lgbtq acceptable within their inner circle and then their inner circle will make lgbtq acceptable in a wider but small part of society(ie liberals) and that small part of society will slowly be able to make lgbtq acceptable as a societal norm by "converting" more and more people.

The structure does not exist in these societies for lgbtq people to fight for their rights. Their best hope is that their inner circle can accept them and they can live a normal life while keeping a low profile, they are still at stage 1.

Or to put it in a different perspective, what will happen to you if you go to a plaza in Pyongyang and demand democracy/human rights? Do you think that would be smart? Or productive? You will just get arrested and be sent to a prison camp. And it is even worse with lgbtq rights, because a lot of north koreans can get on board with democracy and human rights but in these societies, 95% of the people are actively against lgbtq.

PS I am not interested in debating about homosexuality in 1920s Germany or whatever because that is a niche that completely ignores actual societal historical facts.