I'm in favour of coding interviews for people that don't have a public record of their work -- and even then I'm in favour of them in most cases.
The trouble with programming is that we have no general device to measure it that transfers between positions. The level of education and ability wildly differs between schools and individuals.
I've encountered people that have worked for 10 years, yet in my opinion, weren't qualified to work as a programmer. I've encountered people that haven't worked yet, but were excellent programmers.
There's a million ways into this profession. There's no reason to believe the history of an individual matches the expectations of your company.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.