It's funny because the first advice is to not group all the problems together near the button, and then the second advice is to not disabling it because the use

It's funny because the first advice is to not group all the problems together near the button, and then the second advice is to not disabling it because the user could have missed something higher up. It sounds like they're fixing a problem that they themselves created. The other advice seems solid though, I especially appreciate the part about adding an icon for colorblind people.