Both of these suggestions seem bogus.

I suspect people with a degree in computer science or applied mathematics tend to be on average better programmers than people who claim to be programmers who don't have those degrees. But the bar set by simply having a degree is so incredibly far from the level that you'd want out of your technical lead that it's not much of a useful metric.

Typing seems even odder. Doubly so where I live as they don't teach folks in school here to touch-type. These days I'd suspect that typing speed is probably more correlated to the speed with which one sends IMs than how fast they code.

Really, if your hiring requirements are "a guy with a degree that types quickly" you're going to find yourself pretty quickly up shit creek.