The PRC is not helping the US and Israel disarm the resistance. China has affirmed that Palestinians must control Palestine in their own state, and served as a vital mediator for the 2024 Beijing Declaration, where Fatah and Hamas were brought closer together and the resistance as a whole in Palestine came together to collaborate more closely, alongside China. In the 2024 Beijing Declaration, which China was a core mediator for, it was declared that the resistance must not be disarmed.

China has consistently only ever veto'd at the security council if it is willing to intervene millitarily in order to protect the veto'd outcome. The PRC has veto'd sanctions on the DPRK, and has enforced that veto by increasing trade with the DPRK. The US Empire has never been stopped by a veto, such as when it was determined to stop shipping arms to Haiti, which the US subverted. China vetoing the UNSC declaration on Palestine would mean mobilizing its army to directly prevent the US's plans for the region.

If we look at how resistance orgs are responding, they aren't blaming China. Instead, they have similar analysis to China, that is that the plan itself is unworkable and that they cannot implement it in the first place. China also adhered its best to both the PLO, who endorsed TRUST, and Hamas, the PFLP, etc that oppose TRUST.

Personally, I would rather China take a more millitant anti-imperialist stance than their current passive stance. There's good reason to believe this will be the case in the future, as younger generations in China are more millitant and more overwhelmingly pro-Palestine. However, I don't confuse imperfect allies for enemies, which is the western-leftist mistake you've fallen for. You did the same with Hexbear, calling them "transzionist" and claiming they ban critique of contrapoints because she's trans. The reality is that Hexbear is anti-zionist and pro-trans, and regularly clowns on contrapoints for her awful liberalism.

China is contributing to a multi-polar world. China's position in the global stage facilitates south-south trade, which bypasses unequal exchange, where the global north maintains monopolies on high tech industries so as to consistently charge monopoly prices in exchange with the global south. China charges non-monopoly prices, and this is why exchange with China, alongside the rise of the Belt and Road Initiative, has resulted in dramatic development in African and Latin American countries. This is ultimately the single greatest contributor to the downfall of imperialism globally, and is why right now there is such a large cold war with China.

Your confusion of imperfect allies with enemies is why the western left has continued to fail to meaningfully challenge the status quo. Jones Manoel was correct in Western Marxism Loves Purity and Martyrdom, But Not Real Revolution. Western leftists do the work of the US Empire by making the same mistakes you've been making with respect to China, thereby sabotaging allies and making the efforts of the ones actually arming, facilitating, and committing the genocide easier.

TL;DR join an org. Having a practical outlet to test theory to practice, and directly organize against arming and supporting Israel, is a much better use of your time. It will also help you form a more correct understanding of anti-imperialist struggle.