I don’t understand how either of those things fixes the problem though.

The cable has to be at least long enough to go from the lamp post to the curb which therefore requires it to cross the pavement. So it can’t be any shorter than the necessary length plus the distance that is required to travel over the car in case the charger is on the other side. Most cables are already not much longer than that.

I also fail to see the benefit in people bringing their own cables, all that does is it means that the cable isn’t there when you’re not charging, but it’s still a problem when you are charging.