[btilly]

Your argument assumes that taking humanities is required to develop critical reading skills.

However attempts to measure critical reading skills, for example in standardized tests such as the GREs, consistently find that STEM majors are better at critical reading than humanities majors!

Secondly, critical reading is not the only required skill for critiquing and assessing potentially flawed arguments. Quantitative reasoning is also needed. For example you can't assess public policy questions about COVID-19 without quantitative reasoning. However STEM courses are far more likely to teach quantitative reasoning than humanities courses.

This critique of your argument is brought to you by someone with a STEM degree.