I didn't fully follow the 18th edition changes post around a month ago. And I dare say that my concerns were mentioned in it. I don't think it is necessarily a bad idea at all, and it will give me a chance to dust off my rarely used SDS maxi! On the ground though, doing work day to day, I think all it will achieve is my quotes bring undercut hugely. There are plenty of cowboys out there already, and this will only help them IMO.
And I agree that the rod installation in the piccy is pretty tatty. Yeah ok it's in conduit, and the rod is enclosed, but I don't think that it is in a suitable location. Once that vegetation grows it could be forgotten about completely. I would have discussed it with the client and put a proper pit in, at the visible edge of the flowerbed at least.