I have no words to describe my son’s key layout.
As a father it's your duty to teach him WASD. My father didn't, so I played with the arrow keys for years xD
I feel like there are really only two problems with using the arrow keys: they're in an awkward spot that makes you hold your arm and wrist at a weird angle (unless you use your mouse on the left side of the keyboard, in which case I think the arrow keys are probably better positioned than WASD), and for some reason some keyboard/laptop manufacturers try to get fancy with the arrow keys so they aren't always a standard size or layout. Lord fucking knows why, but my previous laptop had the left and right arrow keys normal sized but the up and down keys were half-height so they were both between L/R. The top of the up arrow key lined up with the top of L/R and the bottom of the down arrow key lined up with the bottom of L/R. I didn't use the arrow keys on that laptop for gaming, but even just doing other stuff I could never hit the correct key when trying to hit up or down. My current laptop has the arrow keys in the normal layout, but they're each half the height of the regular keys on the keyboard which still makes them a bit awkward to use.