Do many people actually have those? It would be useful, yeah, though it's a hassle to have plugged in to the controller imho..
And, folks like yourself who have the keypad, are welcome to read the article and decide, oh well, i'll use my keypad.
To be fair, whats a reviewer to do.. I could in theory cover every possible scenario in a super long section, ensuring every tangent or possible hardware / accessory combination is covered. I hear what you guys are saying but at the same time, it's limited space / time.
For some people doing that might be interesting, and for others it'd be a tedious list that would turn them away from the article.
But feedback is always welcome, and you learn something every time