I am sorry Rum, but i absolutely disagree
surely the measure of a good craftsman is his knowledge of the limitations of his trade?
I would expect any craftsman worth his salt to know that:
A. A crimped or soldered hoint is acceptable in the regs (and I am pretty sure always has been - nothing to do with 16th or 17th edition)
B. It is not 'best practice' and you should never 'plan' to do it.
However, lets say you need to repair a damged cable or need to extend a cable, the entire upstairs is laminate flooring, the customer expressly does not want his laminate ripping up, or his newly decorated walls chased, and he asks "is there no other way to do it", well the answer has to be yes, and I would EXPECT a craftsman to know that