>>163
a shortened URL absolutely takes up less space than one of those QR codes. literally the whole point of URL shorteners is to make URLs more human-usable, and we're talking about human use. why wouldn't we use them here?

>>159
It's not, but regardless, also easily fixed by URL shortening. This has even already been done by some URL shorteners. My own employer, for example, has an URL shortener that shortens everything 'employer.com/123456789' (some number). Easily read by OCR.