I agree with you Fitzy it's the way they are saying they would pay for it, rather than the policy.
I have always thought that parking in a hospital should be free but having now thought about it, a few things may spoil that ( on the face if it) good idea.
Any older hospital set within a town or city centre, would attract those who want to park free of charge while they shop or go to work.
Even out of town hospitals could have a problem ( for patients and visitors) as if parking is free, all those who work there , and in a large teaching hospital there are hundreds, who mainly travel in by bus, would then take up most ofthe parking places.
So I think a lesser charge would maybe be the best way to go, rather than free.