believe in multiple intelligences as a "close enough to reality"
measure, as much as IQ was once considered a valid instrument of
intelligence. [it's still considered valid in some circles, but
not in education as far as I know - not for some time, which is
what it was primarily designed for if I remember correctly]. Of
course I could be wrong about that.
Multiple intelligences allows one to be, let's say, 'genius'
equivalent in introspection yet not be able to manipulate 3D
objects in their mind (which is one of the criteria for the old
IQ test).
That sort of thing.
So the last thing you said, yes.
Outliers are the lucky ones who get opportunities.
The rest? Unrecognized because their genius wasn't measured
properly.