Attacking IQ is nothing whatsoever like vaccine denialism. The valid/meaningful uses of IQ are widely debated in several hard science fields. That's not true of vaccines.

I don’t mean to suggest that an IQ test doesn’t have any value, only that they don’t account for many subtleties across (sub)cultural boundaries and are too heavily considered in determining one’s intellect, and often worth, by society.

You’re using Motte-and-Bailey tactics to conflate IQ test results with vaccines denialism, on the basis that they are both “for the greater good”, which conveniently paints my point in a certain political light. How exactly does selectivity on the basis of IQ test results “enhance health outcomes for groups as a whole”? Maybe you could back up this argument with some historical context.

> “Similarly, people don’t like the idea that some individuals are just born smarter than other individuals.”

What data do you have to support this claim? And how much of this inherent intellect factors into IQ test results?

> People don’t like the fact that requiring individuals to cooperate can enhance health outcomes for the group as a whole.

I am not certain where you are deriving this claim from.

> Similarly, people don’t like the idea that some individuals are just born smarter than other individuals.

Nor this claim, as well.

I have had many discussions on the topic of IQ, and I have never once seen anybody ever argue that there is no variance in human intelligence. There is a large range of variance in every human attribute. That is not the focus of the debate. Rather, most of the debate seems to be surrounding the construct validity of IQ. Statistical validity != construct validity.