That’s out group homogeneity (or maybe just propaganda-driven thinking — Western media certainly portrays China that way) and not even remotely true to anyone who can read the Chinese language to some extent. Go to allegedly tightly controlled Weibo and check out comments under most sociopolitical news — I mean actual news, not “happy 71st birthday PRC” kind of stuff, and witness the shouting match between different groups, with an astonishing amount of “unpatriotic” opinions everywhere (astonishing if you think the Chinese should have one voice, that is). There are also a substantial group of people who quite literally worship developed countries — ironically more prevalent among people who have never set foot outside the country, I’d say — and will quickly label any domestic problem as uniquely Chinese, even when they’re not. There’s even a Chinese saying about this, “the moon is rounder in foreign lands” (everything is better in foreign countries). Even different group of patriots can be seen warring against each other sometimes over political issues.
People on the opposite side of the world aren’t nearly as different once you get to know them.
Comparatively the People of the West are divided. Not just the US but also Europe. They are divided not just by politics, but also by their world view, and few have anything good to say about their home countries.
This right here is the biggest wedge China can exploit. If they move as one while the West gets mired in debates then China will win.