Earlier quoted context omitted.
Given that it's unsafe to drive too fast and "too fast" depends greatly on the specific road you're driving on and weather conditions, speedometers are safety equipment.
In those cases speed dependent on driving condition is a feeling based on the experience of the driver. Speedometer does not help you there. If you do not have a feeling for the safety under which you are operating, then perhaps you should not be driving in the first place? Which I believe that is the underlying problem here, We are too lax with whom we issue driving licenses too.
Oh but it does! A blind corner will kill drivers going by feel alone, who don't have experience on that particular stretch of road. Feel alone doesn't inform you that you're in a school zone (until catastrophically too late). Remember, the driver isn't just a hazard to themselves, they're a hazard to everybody in their path.
How do you propose to limit licensing to experienced drivers in such a way that inexperienced drivers are capable of gaining the experience necessary to drive?