I think the answer should depend on the school itself, i.e. what is the quality of the math department vs. the cs department? In my case I went with math, and i

I think the answer should depend on the school itself, i.e. what is the quality of the math department vs. the cs department? In my case I went with math, and it served me well. I don’t think one or the other will ultimately exclude a motivated person from pursuing their (cs related) passion.