After all, your imaginary friends never argue or dissent. They never bully you. And they always agree with your opinion.
You’ll be really nice.
On the other hand you’ll fold the moment real life nudges you.
Just a lifting weights help to grow muscles, a little trauma makes a strong rounded person.
The word is another victim of the hyperbolic tendency in, specifically, the Californian dialect of American English. You will see people talking about various small insults as 'trauma', and brand-new constructions like "trauma dumping" which is, often as not, telling a friend about a bad week when she wasn't in the mood to hear it.
Don't fall for it. Trauma fucks you up, that's how you know it's trauma.
"Or disabled" — reality
It's sick and extremely maladaptive to say outright that everyone should be traumatized for their own good.