The whole point of credentials is that they are designed to be revoked. That's their whole point. If your credentials are pulled, you lose your ability to practice. That's by design. They are not gate-keeping tools. They are "this guy killed patients, so let's keep him far away from them" tools.

Let's fix the real problem then? Why can't tech be like this?

The closest thing you’ll find is actors and musicians auditioning. But performing is an actually a part of their job.

Nurses only have 4 years of school and they don’t have whiteboard interview equivalents. Medical technicians don’t either and they don’t even have degrees in most cases.

Also one minor correction most residencies are 3 years, although some are longer.