You are trying to say that the "people" are too stupid to make a password that you "crypto guys" cannot crack.
The problem with brainwallets isn't just the possibility that "crypto guys" might crack them. It's also that they generally have insufficient entropy and are therefore significantly more risky.
That might mean being cracked by a hacker, or "crypto guy", but it also might just mean that another of the billions of humans on the planet could end up making the same choices as you.
And what other reason for that if not to indulge one's poor ego?
Perhaps to help protect others from experiencing preventable losses?
Maybe not because we care about them,
Clearly.
Crack my password, mr crypto guy, if you are as smart as you are pretending to be.
It holds thousands of bitcoins - that should be enough of the motivation.
"Cracking your password" doesn't require intelligence. It just requires that someone somewhere has the same misconceptions as you.