When the US was angry with Russia everything was suddenly Russians. Now they're being difficult at China, and suddenly China is the country doing everything wrong. That anyone still takes them seriously is to my mind an incredible miracle.
Note that I am a US citizen than expatriated after the second gulf war.
So I am not a fan if the US gvmt, but if you think for a second that the Chinese and Russian governments AREN'T doing the things they are accused you are naive.
Going to China wouldn't teach you much about its government structure and governance. It's not like you can just walk in and observe party cells interacting with company leadership.
You don't need to go to China to know what the government structure is, what foreign policy it conducts and what kind of economic behavior is clearly not just condoned (small scale hacking, data harvesting) but encouraged (fishing other nations' territorial waters) or even demanded (foreign business ownership requirements, IP transfer requirements) by the party.
You don't need to go to China to hear reports from dissidents experiencing internment, forced labor and cultural genocide. Or to see all the broken international agreements and sovereign promises, eg the early destruction of a free Hong Kong. Or to see the territorial expansionism in salami slicing illegal maritime boundaries.
Or... most importantly, to understand that a despotic cartel that doesn't believe in individual human rights is a terrible form of human organization that has terrible externalities for the whole species and planet.