Homeguard,
If you think anyone is going to get rich instructing then you obviously do
not know what instructors get paid in the UK. Personally I have no great problem with a PPL who does the required exams then instructs for free, -
provided the school does not then charge the student (or at least charges a lesser rate, I will allow for the fact that they provide facilities), though it does not take much more to then get a CPL anyway.
The people who are "stuffing the poor" are
not the instructors who charge (still a pittance), but those who undermine a decent wage for instructors by doing it for free