It's pretty shoddy journalism for the title of the article to assert this as fact even though it's just an allegation that hasn't even been investigated yet.
You probably don't see the bias in the article because you support unionization. If the article was instead titled "Sexual harassment complaints double after NPM staff unionize," you'd probably be complaining about bias the same as I am.
Erm, yeah, I'm not sure where to begin with this other than a "people in glass houses" style comment.
I don't support unionization, for at least a couple of reasons[1], yet I still can't see where you're coming from with these assertions.
[1] I don't think either is relevant to this discussion.