The eye chart machines (they are electronic and usually at each clerk window) look like they are from the 70s for what its worth.
Are you suggesting that someone shouldn't have a license if their vision is not correctable to 20/20, even if it's good enough for all essential driving tasks?
WA also allows transferring of drivers licenses without additional testing. To me, this is the most problematic part, because different states have different rules around priority, proper usage of the left lane, etc. and WA is a transplant destination, and the resulting mix of driver backgrounds is chaotic. As a general example, in WA pedestrians have priority at all intersections, including where there is no visibly marked crosswalk, but this is not true in all states.
Michigan takes car culture seriously. You have to parallel park on the drivers test, and the Secretary of State offices (there is no DMV, because what a waste of taxpayer funds...) have eye charts when you renew your license.