I was thinking the same thing! I mean I guess if you think about it. There must be 10,000 or more people licenced to do the inspections (maybe 20,000, I dunno, can't seem to find any numbers). It's not that unthinkable that one a year gets caught breaking the terms of their licence, and when that happens it makes sense that they can't trust the inspections that they've done.

I guess it's no different to people losing their drivers licence, it's just that the impact is wider.