There's not actually very good data behind some of the irvetic personality stuff. So i personally still think there's a lot of value in it, even if it is not actually that scientifically validated. We create concepts that help us navigate life, and even if those concepts are not scientific provable, they can be very useful. There isn't an ego part of the brain. It is an emergent concept, which has a lot of functional utility, but it's not necessarily a real thing.