That would be true if you had universally great designers back then, which wasn't the case, thus the defaults are universally bad, so it's a bad heuristic to stick to them and force a waste in trying to understand them.
For example, why is the default vim cursor hjkl? Well, it's just that the arrows on the physical keyboard of one of the vim designers were drawn there. That's it. There is no deep thought in search of the best cursor position, and understanding the why is just learning a useless piece of trivia.
For example, why is the default vim cursor hjkl? Well, it's just that the arrows on the physical keyboard of one of the vim designers were drawn there. That's it. There is no deep thought in search of the best cursor position, and understanding the why is just learning a useless piece of trivia.