Sign up form discriminates against people with short surnames

I sometimes have to accept that an organization knows me as 'Mark Frauenfeld' because it won't allow surnames longer than 10 characters. But having a truncated name is not nearly as annoying as being forced to add extra characters to a name just because a form won't process surnames less than 3 characters.

Discrimination:( pic.twitter.com/C6n4arMbsV
— Jane Hu (@hujane) January 27, 2019