That is not the case in the US or in the EU. Things like GM and Hyundai won’t even show the brakes with the foot completely off on full regen. You will specifically say you cannot do have a secondary braking systems as well which is where I think the issue comes in. BMW and Mercedes both only show brake lights when you fully remove your foot from the accelerator with regen turned on
Not including the wheel well the Isuzu should be about 47 in. The F-150 is about 42. Including the wheel well it’s like 50 on the Isuzu and 52 on the F-150. The Isuzu will have more usable bed space and the wheel wells don’t go up very far so they’re pretty usable going like 2 inches up.