Earlier quoted context omitted.
Show code and explain, or it didn't happen. Takes a capable interviewer, of course, to distinguish sweet talk from profound knowledge.
I’m confused by your response. You expect the candidates to show code from their current/previous employer ? Or side projects that most people aren’t allowed to do by employers?
If all their previous employers don't allow side projects (must be in US or something, where employees don't have rights), then they should pay accordingly more to balance that restriction and loss in experience.