How can someone support them in good faith? I’ll focus on China, but here are some reasons:

For starters, I don’t believe that it’s possible to impose on a society from the outside to accept LGBTQ people. For example, making LGBTQ acceptance as a precondition on having good relations with China has literally 0% chance of improving life of LGBTQ people there. It’s more likely to backfire. On the other hand, having good relations, and allowing cultural exchange to happen naturally, can - and I think, over the last few decades before relations soured, has - improved LGBTQ acceptance there.

Also, amongst superpowers, China has a relatively good track record when in comes to using military force. They have had conflicts with neighboring countries, but it’s nothing compared to the wars the US or Russia (and USSR) have fought.

Finally (this one I don’t share, but I think it can be held in good faith), someone might not care about human rights all that much. For example, if you consider government-sponsored murders to be just the same as any other - not better, but also not worse - then even if you include Tienanmen Square and other murders by the government, the murder rate in China is still lower than most of the world.

I don’t understand how this will help deep fake and fake news.

Like, if this post was signed, you would know for sure it was indeed posted by @[email protected], and not by a malicious lemm.ee admin or hacker*. But the signature can’t really guarantee the truthfulness of the content. I could make a signed post that claiming that the Earth is flat - or a deep fake video of NASA’a administrator admitting so.

Maybe I’m missing your point?

(*) unless the hacker hacked me directly

That said, you can use a third party service only for sending, but receive mail on your self-hosted server.