Spot on. It's a shame that we haven't prioritized (and de-stigmatized) mental health, especially at a young age, so horrible children don't grow up to be horrible ego-centric adults.
Is that to say that people don't have personalities which suck? Of course they do. That being said, there are many ways of balancing a person's tendencies towards negative outcomes, but ONLY if they can admit they have a problem and they're willing to put in the effort to re-balancing themselves.
A lot of hyper-toxic fiddly freakouts over small things actually turn out to be deeply rooted in some sort of horrible trauma.