This is a deep misunderstanding of IQ. As the product of two MENSA-ns, I can say with good faith: While high-IQ people do seem to have more varied interests than average people, IQ doesn't so much as govern interest as govern processing speed. One of the original purposes of IQ was selecting for fighter pilots -- fighter pilots with higher IQs means that you have fewer deaths, because they are able to process and react to stimulus faster than others, and they are better able to process the spacial information given to them.
The best analogy I know of for people in tech, is that you should think of it like having a slightly faster processor with slightly bigger caches. You're more able to manipulate things in your head (thanks to having a bigger stack), react to stimulus faster, change focus easier, and so on.
Someone with a lower IQ is capable of the same tasks, but they are likely to need to expend more effort and time at achieving the same result. From observation I can say the difference is mostly marginal.
As a personal, anecdotal example: One of my parents is in the top 1% of the population, the other is in the top 2% of the population. I have observed many times that my parent in the top 1% will come to a revelation, and voice it -- and as they begin voicing the first syllable or so, the same revelation occurs to the other parent. It's quite amusing. [I feel I should add -- there are cases where the roles are swapped, but that usually only happens when their attentions are focused on separate things].
EDIT: Also note that having a high-IQ doesn't magically make you less-susceptible to bad teaching or incorrect explanations. There exists a sub-society of MENSAns who were told by their tutors that they were slow and stupid, and that they would never amount to anything, and who have low self-esteem and other problems from being told such things.
EDIT 2: An example of someone in science with a low-IQ (of 98), is Julia Robertson, known for her work on Hilbert's tenth question, and her work in decision theory: https://en.wikipedia.org/wiki/Julia_Robinson