Slop.

Cuba, Vietnam, North Korea, Angola, and tons of other nascent revolutionary movements would have failed if the USSR, or even China, took that point of view before. It's fine to stand up for what's right and help the local people achieve freedom and sovereignty.

Maybe they're afraid of being another USSR, but it could end up making them alone in a world surrounded by allies and puppets of the West, which isn't a good position to be in either. The USSR failed more because it couldn't strip liberalism from its leadership. If anything, helping these other movements probably helped the USSR survive longer, because they were able to sustain an alternative economy in the world order by trading with these other states that survived and owed their existence to it. When it fell, it set these other states and various communist movements back decades, and has forced many of them to become more liberal to survive.

I think China is now at the level the USSR was at before. They are undoubtedly another super power and being able to fend off the US tariffs has proven that. It's time to actually start using that, because the US and West definitely does and it's made them the strongest hegemon in the world since WW2, and they don't tolerate other hegemons. The earlier they support the states that are resisting US imperialism (like what they're doing by supporting Russia and should be doing with Palestine and Iran) the longer it will be and easier it will be when the US finally attacks China.

Tl;dr: Saying it's the West's responsibility to end this because they started it and "moral responsibility" is naive and dooming the Palestinians to the same fate as the indigenous populations of North America or Australia. International solidarity is the only chance for communists in a neoliberal world. The capitalists have it, we need it, too.