Why couldn't you use a Chromebook comfortably because you are left handed? I am left handed and I use a mouse just like any other right handed person. I don't k

Why couldn't you use a Chromebook comfortably because you are left handed? I am left handed and I use a mouse just like any other right handed person. I don't know anyone who is left handed and uses the mouse with their left hand. So saying that 20% of the population can't use Chromebooks comfortably isn't right in my opinion. I'm sure for some people it is a problem, I'm not trying to say that it's not. I also think that it's pretty stupid that you can't reassign the mouse buttons and I really don't like their response to the problem. Or is there a different reason why it should be uncomfortable?