Anyone think the term " gaslighting" is overused these days
No - its underused. Shitty, controlling, emotionally verbally and often physically abusive behaviour from men is normally excused by women on the outside who choose not to accept or understand. Normally because the man is good looking, charming, personable, mildly spoken etc outside the home, but you don't know that behind closed doors he acts like a devil towards his partner
Also men who dish out this kind of behaviour - which thankfully is more widely recognised these days - explain it all away with The Script ie 'my ex was crazy'. & just like that, he is believed
People are shallow as fuck. Outside appearances and level of fancibility or point to which someone who is well-liked, matters greatly. No matter whats said out there. So if you say your man is a narcissist even if you're pretty clued up on it then you can't possibly be right - someone out there has already decided you, the little woman who doesn't know better, is wrong. Its another excuse not to believe the woman, and/or to minimise her experiences.
If a man is obviously loud/vulgar/aggressive then of course, the gaslighting is believed of him. Throw into the mix him being not handsome, personable etc and the belief is very strong
Gaslighting is one term - I don't care how it sounds, if it raises awareness or makes a woman suffering better able to express how she feels, then that will do
But anyway yeah, your man is gaslighting you - all that nonsensical pretending not to have said something, or not to remember. Don't engage in it