I too have criticized here the fact that the passenger seat is not adjustable in height. My better half
in particular is not really happy about that.
However, it was certainly not a deal breaker for us, also because the only other candidate, the Toyota Yaris, also has no height-adjustable passenger seat and the seat height is almost 6 (six!) cm. or some 2 1/4 inches lower than in the Jazz.
We just think Honda likes to keep us nimble at our age.