Calling someone a "gaslighting c*" didn't seem angry to you?

Not necessarily. Gaslighting can simply be descriptive, and different subcultures associate different emotions and intensity with c*, particularly outside of the US. (But also inside the US.). For example, it can convey dismissiveness, not anger.

Akin to how “bless your heart” can (operative word: can) take on two VERY different meanings depending on what part of the US it’s being uttered in.