@jMyles, sadly, "oppressive language" is probably as jargony as "NVC" and "Active listening" are for most people. If you aren't aware that a cultural clique has changed a few characters in a common phrase to coin a phrase that means something only slightly different, it just looks like a typo. I will have to google "tu quoque"...
"NVC" and "Active Listening" are jargon, and not terribly impressive jargon - I'll warrant that.
But "oppressive language?" That just seems like a good descriptor of a communications style that we all encounter from time to time. That's the reason these "systems" have picked it up.