Joejoe that’s no different from someone needing hand controls. If they need it they have to have it, I’m talking about the majority and saying it’s not as bad as it seems. Wiper is better but don’t let it put you off a car that ticks all boxes except rear wiper.
Side note. The Renault Scenic has the side mirrors where the end curves to give a wider view. That would be handy for someone who struggles to look over their shoulder.