Personally I haven't seen anything pro-Russia, so I can only comment on pro-China content.

Seems to me like a lot of people are finally realizing most of what they knew about China was American propaganda, and it's not actually that bad. Though of course, people being polarized as they are, they're moving from one extreme to the other, and not somewhere in between.

Plus, China has a lot of resources to spend on its own propaganda. This especially affects younger generations, who spend a lot of time on TikTok.

Is this some kind of organized disinformation campaign?

I'd say it's quite likely.

Whilst everyone here is just disagreeing with you on basically all points OP, I have to agree. There have lately been a lot more weird memmes, often factualy inaccurate and providing no real argument, that support or defend the Chinese, Russian or North Korean government. I do not in any way agree with the sentiments of these memes* but if people actually hold those opinions their free to discuss it, but I would wish that they didn't do it in the form of bad memes in the general use communities, but maybe instead in one of their own, as stuff generally works on Lemmy.

Also, a lot of the worst memes came from one single account. I have since blocked that one person and it improved the situation remarkably. And for anyone who wants to attack me for "not being able to stand hearing other people's opinions", the memes this person (or to be real, probably bot) posted were factualy incorrect, badly made and not funny in any way. I don't come to Lemmy for political discussion but for memes and other fun threads.

* This is just about my personal opinions and doesn't effect anything I wrote above but here we go. Read if you want. Regarding the endorsements of China, Russia and North Korea my main problem is that I think democracy is the most important feature of a state for I think yhat the state should exist to serve it's people and to do so in a way that reflects the people's wills. Therefore, I have a really hard time supporting any non democratic state. Also, in regards to Russia, they invaded Ukraine! I have a very hard time having any empathy for a state that shows such violent aggression against one of their neighbours. Especially as I can not see how Russia or the rest of the world stands to gain anything from this war. Ofc North Korea and China have also done horrible things but I think have have gotten my point across at this point, I think democracy and free speech is important. That said, if someone can point to a particular part of, or some project of, some non democratic country that's working well and then say "hey, maybe we should try that", then I have no problem with that. But fully endorsing and saying that we should be like a, for example, China to me is a absolutely horrible idea.

Also, because people will claim that I did even though I didn't say a shit about it, I do not either particularly like the US. What I said about democracy and not invading other countries applies to them to. I'm also not from the US but rather from Sweden in the EU

EDIT: after reading even more of this thread I think I'm starting to understand that many people just support Russia and China because there a counterweight to the US. For me this could maybe be a valid argument for supporting some of what China does but it does not for me mean that I can endorse China and their non democracy leadership and darker sides. Things simply don't add up for me, I can't support China because the US shouldn't get to powerful because China should neither have that power.