This is always what I use. That is one reason, but I also don't want to group all of the Americas in with the US and it makes that distinction pretty clear.
That always confused me. Why do so many people call it CCP? That’s not the proper name of the party so what gives? My professors do this all the time and I even mildly called it out in one of my essays because it’s just so stupid.
I think some people do it out of being extremely petty, as a way to "own" China. Like China cares what John Youtube calls their party. There is also the attempts to deligitimatize it from standard Communist Party naming conventions (Communist Part of Country) and to highlight racial elements instead.
I honestly think a lot of people just do it out of ignorance. The first group is so pervasive that I think a lot of people just legitimtately think CCP is the correct term without knowing better.
I also think a majority of people do it because they genuinely believe thats the proper way to say the name and its abbreviation, although the way it started is more nefarious. Maybe “nefarious” is a bit dramatic but it is extremely annoying especially when people in politics that interact with the CPC a lot should know better, and they probably do but say the party name wrong just to be spiteful.
Racism is a part of it, they're not the communist party of China, they're the Chinese Communist (party), playing up the yellow peril and the red threat at once and then dropping off with the party part at the end which they couldn't care less about. It centers and racializes it. We're not just fighting commies, we're fighting Chinese commies.