How does this match the title of the piece. Then,
"So I imagine that in the U.S., they're tracking labor organizing activity but not union members yet."
So they have no proof and this is all speculation. Another Amazon hit piece, real quality journalism here.
Amazon used some people to catch people cheesing their job application process and then because the US doesn't have strong unions and they know they look at labor stats for people joining Unions this "journalist" has extrapolated they are definitely "surveiling" people. This is really low quality.
Edit: I'm fine with the allegations being true, the point I'm making is this isn't the article that we should be discussing because it's lazy journalism -- another poster below me linked much more well thought out and written posts on the subject being discussed by this article.