The point is that reading code from top to bottom is not a reason to need or prefer a mouse. Other people prefer using a keyboard and find moving through pages more intuitive than scrolling.
Different people have different preferences, so clearly it is a reason to prefer a mouse.
I don’t use my mouse with Emacs, but I’m not going to tell someone else they’re wrong for wanting to. I’m beginning to see why people feel the Emacs community is less-than-welcoming.
Of course different people have different preferences. I don’t tell anybody that the way they prefer is wrong! I don’t say there is a reason to prefer the keyboard either. But being what it is doesn’t make Emacs broken. You can definitely read code from top to bottom on it.
