FWIW, any accredited CS degree program in the US will have rigorous math and science requirements: https://www.abet.org/accreditation/accreditation-criteria/cr...

I don't think it was worded very well, but I think the parent comment was saying, "the bulk of CS can be covered in a masters program, so take an undergrad degree that has the same overlap in math/science, but a different focus". I'm not sure I agree, spreading the absorption of that knowledge over 4 years can be beneficial.