Yes, this is a legitimate problem because there are both genetic and environmental contributions to intelligence. We must be wary of eugenic arguments. After all, the easiest way to raise the average IQ of a society would be to kill everyone who doesn't meet a specified minimum IQ. A more politically palatable way would be to allocate resources away from those groups.

This isn't a matter of biasing results, though, because the metric validity of intelligence testing doesn't require that we play nice with making sure everyone has equal access. These are separate problems. Intelligence research is a scientific problem, and resource allocation is a political one.

We already know that environmental contributions to IQ are important, and a reasonable and moral person who is literate on intelligence research thinks that resource allocation to lower-performing people is critically important.