To think the terms ‘narcissistic personality disorder’’ and ‘gaslighting’ are being massively misused and overused?

[Fencingfan]

So I definitely, absolutely believe these two things exist, but I think they are being so overused that their true meaning is being diluted. More worryingly I’ve noticed them being misused by people who are clearly trying to manipulate others when they are trying to justify things to themselves/others about a relationship dynamic, shut down any meaningful relationship discussions or work and just generally just absolve themselves of any responsibility in a relationship issue. What do people think?

There's a self styled guru on YouTube who is an admitted narcissist (no idea if its actually diagnosed) yet lots follow him and take his advice

Theres another life coach/guru who has featured said narc, who says he has been the victim of other narcs, who has no qualifications as far as I can see. Yet wanks about all over YouTube and has had real people as clients as a life coach, him and his friend have been on triggernometry which is a popular podcast.

Apparently some people take these blokes seriously. I agree with a lot they say but at the end of the day they are just random blokes with no training.