Less is more?

Dahon Mµ Uno, a single-speed folding bike with coaster brake.

dahon.com/intl/muuno.htm


However, is 65" in gear ratio too high for a single-speed bicycle?

I’ve often wished for a few more gear inches on the Strida. 65" seems good to me. At least you could stand out of the saddle if you needed to on hills - that’s not something the Strida allows for.