RDR,
You may just as well argue that a pilot may feel inclined to ignore VFR minima and depart in low vis, or take off overweight, or.....
This issue of dual control fitting is not recent, nor is the interpretation by CASA. The link that I gave to CAAP 42ZC was a summation of the regs, which have been around since Pontius was a pilot. They even allow a pilot to carry out fabric repairs, for gosh sake! The link is
here, in case you missed it. It can easily be circumvented (legally) by getting an Maintenance Authority, and at the same time get the MA issued to cover all the miriad other little pilot things which come in useful in the bush, such as Authority to carry out 50 hour inspections, fit/remove cargo hooks, fit/remove camera mounts, etc.
And with the proper instruction and Authority, who can argue that the pilot wouldn't benefit from the excercise?