Referring to political opposition of any sort as "insurgents", in a representative-style government, is both ridiculous and reprehensible. Stopped reading right there.
Which is annoying, because I agree with the headline argument. The underhanded rhetorical tactics are unacceptable, however.
Huh what is the issue? "Insurgent campaign" is a pretty common term of art in American politics for political campaigns that go against the establishment, it's not derogatory or anything.
I was unaware of the broader trend and find it disturbing too. It's a poor choice of words. Fine for the tiny percentage of the population that is technically minded, but for the overwhelming majority, it will carry connotations that will have trickle-down effects across the broader electorate.
It subtly influences anyone who doesn't think about it very hard to view those campaigns unfavorably, given how the word insurgency is most closely associated with terrorism and warfare.
Things like this need to go through a science communication translation to avoid harming the public.