Think about this: If you were to overhear someone exclaim loudly “ohmygod! He’s practicing unlicensed <profession> and somebody could get seriously injured” and you insert whatever profession you can think of, and it sounds patently ridiculous then it very definitely is ridiculous.
There are only two reasons for licensing a profession – someone could get seriously injured and someone wants to protect their income.
And if your profession does not involve life threatening injury but requires licensing and certification, I can only conclude that the entire profession falls in to the protectionism category.