Just because a select few people with an IQ of 100 become doctors doesn't mean that anyone with an IQ of a 100 can become doctors. This is a gross misrepresentation of the data. There will always be outliers, you can't make your case based on them.
Please don't act like people with an IQ of 100 make up even a tiny proportion of medical school classes. The graph here has the bottom 10 percentile at like a 107 IQ. These sub 110 students are very rare and likely don't represent your typical person with an IQ of 100-110. Simply put IQ isn't a perfect indicator, and the people with low IQs who pass medical school likely are significantly different than if we were to pull 10 random people with the same IQ from the population. I have worked with and tutored students across the spectrum of intelligence and work ethic, and I have seen some incredibly hard working and great people who just could not keep up in college or medical school. These students were by all regards above average in many regards, but just weren't able to grasp the complex material that we learn. It is laughable to think that you could pull anyone from the average population and expect them not to fail out of medical school. The real problem is that people here (myself included) have no idea how different the average American is from us. We live in big cities, surrounded by the smartest people in the world, and even the patients we interact with tend to not be representative of the greater population. Don't let yourself get tricked into thinking because the people you know might be able to handle medical school, that somehow anyone could do it. When you've actually met "average americans" you'll realize very quickly that 90% could never even pass medical school. I know countless people who couldn't even pass the lowest levels of certication (CNA, vet techs, dental hygienists, radiology technicians, associate degrees) after trying multiple times. So if some average americans can't complete some of the most basic degree programs or certifications, what in the world would make you think the average person could complete one of the fastest paced and most complex doctorate programs?
You need a serious reality check if you think that even 75% of the general population could handle the rigors and complexity of medical school and residency. The people you imagine as "average" are no where near the average. The average reading level in America is around the 6th grade, how TF do you think they will ever be able to read robbins or even first aid?