„You argue with a teenager on social media, booo“ is such a manipulative thing to say. „I, a teenager, am allowed to say the meanest things but if you, an adult, get angry at it, it somehow makes you weal.“ is pretty damn sure a form of gaslighting.

Manipulative, yes Gaslighting, no That term means something specific and it’s not this

„I invalidate myself so your hurt is also invalid.“ Bullshit!