Dr Grande has a very good channel and it's hard to find a flaw in it. I guess it's relatively unexciting - until you hear him talk about guns.
In my opinion there's a narcissism epidemic going on. Charisma is seen not just as a trait but as a value. Everyone wants some. It's lumped together with good leadership, extroversion etc. Charismatic selfish people are praised as CEOs, celebrities, youtubers, politicians, actors. And enthralled people keep making excuses for them! And calling YOU crazy.
For many people it's true that narcissists are all around, and it's easy to explain! Kind, selfless, charitable people are narcissist magnets(They will keep making excuses). Also people from messed up families, who didn't develop healthy boundaries(Does fish know it's under water?). They are easy to impress and exploit. Narcissists and manipulators can sense weakness. By contrast, if you're assertive, you repel them without knowing and it may seem like the problem is overblown. Both earlier kinds of people end up being marginalized.
I have another issue with Dr Ramani and why she's not a complete source on narcissim. She's great for theory and the big picture but gives few examples of things narcissists actually say and how you might counteract it.