A lot of very smart people are quite hapless at actually getting big things done — particularly when getting things done requires working with people less smart than they are
When someone is good at getting things done, or good at organizing people, that skill is intelligence, broadly defined as the AGI researchers use it. "IQ" is a narrow definition of intelligence; AGI researchers sometimes use "efficient cross-domain optimization", which shows the difference. "A lot of very high-IQ people are quite hapless at actually getting big things done" is correct, but "a lot of people-who-are-very-fast-and-effective-at-a-great-many-different-things are quite hapless..." is obviously incorrect.