It is a license to speak truth about a profession and perform it. Making bullshit illegal. It works for certain professions where the individual can be a commodity and the customer can't reliably determine the trust themselves.
When you're designing bridges or homes or public infrastructure, a lot of times it can be very difficult to pick a good expert (which is necessary, these things can screw up and end lives and waste billions), so you have professional organizations which do the verification for you. Somebody else makes the "hiring decision" which is fine.
But if you lose focus of what the purpose is, you get bureaucratic zealots who follow regulations without any attention to what they are for.