I think the "not moving your hands from the home row" is another relic of a bygone era. It dates back to when people were taught to touch type and that was the starting position. It also dates from a time when keys had to be pressed with some force. Resting your fingers on the keys with a modern laptop keyboard, you're in danger of accidentally typing characters you didn't want to.
I can type pretty fast, though I've never actually measured my WPM speed. But I'm not a touch typist --I still have to look at the keys-- and I don't type 'properly' using all my fingers. I seem to get by with the first three on each hand. So there's no real advantage for me in having my fingers resting on the home row. In pauses for thought [my equivalent of resting on the home row] I usually find I'm waiting with the heels of my hands on the empty space below the keyboard, either side of the trackpad and my fingers just kind of very lightly touching the keys, wherever they happen to fall.
From that position, it really is far more convenient for me to just curl in the fingers of my right hand , which puts the inverted T of the cursor keys right under my finger tips and which I can do without looking, than it is for me to look down at the keys to find HJKL.
I can type pretty fast, though I've never actually measured my WPM speed. But I'm not a touch typist --I still have to look at the keys-- and I don't type 'properly' using all my fingers. I seem to get by with the first three on each hand. So there's no real advantage for me in having my fingers resting on the home row. In pauses for thought [my equivalent of resting on the home row] I usually find I'm waiting with the heels of my hands on the empty space below the keyboard, either side of the trackpad and my fingers just kind of very lightly touching the keys, wherever they happen to fall.
From that position, it really is far more convenient for me to just curl in the fingers of my right hand , which puts the inverted T of the cursor keys right under my finger tips and which I can do without looking, than it is for me to look down at the keys to find HJKL.