Considering that BG3 are going to have controller support eventually, there is literally no reason not to allow this movement scheme for keyboard.
This is good news! Do you have a quote from larian saying this? I'd like to see it.
Me, I prefer controllers. I grew up a console player, and if a game has an option that allow me to use a controller, I take it. For me, that's the best way to get immersed. Different strokes for different folks, I guess.