What do you do, which brings you into conatct with so many electricians that you can derive that enough are not competent to sign off their own work?
Even though you've quoted what I said, you don't seem to have got my point. Why do you keep saying 'so many'? As I said (and you quoted) it only takes a handful of 'black sheep' to make it impossible for anyone to know whether or not any particular electrician is competent to self-certify.
Anyway, as others have said, third-party inspection/approval/certification of their work is something which many people happily accept if they work in safety-critical areas. How comfortable would you be to fly in an aircraft just after its engine had been worked on by a fitter who had 'self-certified' his/her work?
Given that as an electrician, the certificate is the proof that it is safe and the LABC bit is basically a rubber stamp to this, I don't see why you are so against us self-certifying.
Any certification system which consists of merely rubber-stamping the electrician's (or DIYer's) assessment of their own work is obviously a joke which is not worth having. Returning to the aeronautical analogy, tragedies have occured when inspectors have merely 'rubber stamped' the work of fitters they believed to be competent. The other thing to remember is that even the highly competent are not immune from making mistakes - another reason for third party inspection/certification.
Kind Regards,
John