I think testing eyesight is important. In fact you need to make a declaration about your eyesight when you first get a license and when you renew after 70. There is no real enforcement of the former either (they just ask you to read a number plate at a distance IIRC).

I imagine there’s something of a bathtub curve where young (under 25) drivers have higher accident rates due to some combination of inexperience and immaturity, while older drivers (over 70) have higher accident rates due to disability creeping up on them without them noticing.

Further I’d say anecdotally that past a certain point, certainly by 80s, elderly drivers are not accident free. It’s that they have an increasing number of small accidents until someone takes away the keys. If they do not have someone in their life to do that it’s probably reasonable that the government make that determination.

At some point the reduced vision and reflex speed makes them too hazardous on the road to others, even if they are driving slowly and carefully. Parking lot accidents, hitting kids, slamming the gas instead of the brakes, etc.

So the inherent risk of the situations in which they drive does tend to favor seniors generally

What jurisdictions? The one that is proposing the eye tests?