I have to say that I am probably twice your age and still to my old eyes, that site is perfectly readable. Including the Google Plus text. With the best will in the world, I don't think you understand what a site like ours is for. Its not meant to be a work of art - it only generates sales and as such its a success.
It's fine the problem in on his side.We have a lot of experience that suggests simple designs generate most sales. Of course we could make it look nicer but as it stands it works better than anything else we tried.