I know a lot of people who think they can touch type the number row, but I've yet to meet anyone who can actually do it at anything resembling their normal typing speed and without errors. If people could there would be no reason for the numberpad to exist. I'm a very fast typist and I've always struggled with touch typing the number row. Thirty minutes into using a split 40% keyboard and I was using the number row a…
I also haven't met anyone that touch-types 100% to the book. Everybody does some movements which aren't considered correct. The problem is that at some point you reach a level which you consider sufficient and you stop improving. Unlearning bad habits is a huge effort. I can touch-type the number row at full speed as I was drilled doing it. If it wasn't for that I wouldn't be able to either because you rarely need it…
Also, having the period on the top row makes using the number row for inputting non-integers much easier than on QWERTY.