It baffles me seeing tech people often seem to leave the dock along the bottom of their screen, wasting valuable screen space, especially if they're on a laptop. No auto-hide or anything.
So, after about a year or so, I defaulted to moving the dock to the left but stopped auto-hiding it.
Whether you constantly show or auto-hide the dock, it still has to be somewhere. So if you prefer to have it on the side (meaning it also auto-shows when you move your mouse to the side) as opposed to the bottom, it makes absolute sense to move it to the side.
Maybe they don’t realise you can change what’s there?