These split and ortholinear keyboards all seem to be compensating for the fact that we are taught to type keys on the left hand bottom row with the wrong finger.

The "Q-A-Z" slope goes completely against the natural angle of your left finger curl. Same for every finger on your left hand.

The right hand gets things right with "U-J-M" etc. Nice finger curl with your hand in a natural position.

On normal keyboards we should be teaching and typing the "W-S-Z" (or even "E-S-Z") column with your left ring finger, not the completely perpendicular "W-S-X".