Photoshop: legacy channel shortcuts throughout the application

I use legacy channel options on always. i wondered why curves and hue/sat would still keep a shortcut for those channels as option-1, 2, etc? if legacy channels map shortcuts to command 1, 2, 3 - it would make sense to me that command 1, 2, 3 would also work in curves and hue/sat instead of option 1,2,3, etc. not sure why option was chosen to replace command but i think if the user want to use legacy channel shortcuts - as i think most users do - i think they would also expect that the same shortcuts would work in curves adjustment layers.