Abducting someone is only "abhorrent" without the context. It's only bad if you assume they don't have a good reason for it. And you can only assume they don't have a good reason for it if you buy into the propaganda that the Chinese government is some entity made of pure evil.
Maybe these folks were past their visa, or were being extradited for some crime. Who knows. There are lots of super valid reasons for an embassy to "abduct" someone. World governments do that kind of shit all of the time for totally normal reasons. And yet where's the article about "German Embassy KIDNAPS man who was staying in the US on an expired visa." They don't exist because people naturally assume that white governments have a good reason for doing something and non white governments don't. It just racism plain and simple.
Sure maybe the Chinese government is just going around risking international incidents because some random dude is doing thought crime. Or maybe they're just getting them out of the country because they're not supposed to be there anymore. One of those is significantly more likely than the other.