Nick, you are digging a hole for yourself here.
I've been an active participant in the Engineer .v. Technician debate many times (for the record, in the class of aircraft I work on mostly I'm a design signatory, self certifying technician and a test pilot so am probably as qualified as anybody to do so). I routinely verbally abuse companies who send what they call an "Engineer" to repair my dishwasher and much prefer the term technician for somebody who builds and fixes rather than designs and analyses.
But, what we're talking about here is professionalism and what to do when it breaks down. If I authorise a mod which doesn't take proper account of stresses and material properties, or approve a repair that goes against the requirements in the servicing manual, or decide not to worry about an aircraft with a divergent oscillatory mode because *I* can fly it okay - I am being unprofessional in each case and to a similar degree. In each case, I probably need careful supervision, possibly second check on my work for some time, and a black mark on my professional records.
None of this is at-all dependent upon what job title I'm using at the time. The debate anyway is a daft one, because we can only change the job titles in our own organisation and nothing's likely to change the title "Licenced Engineer" (even the Engineering Council use the title "technician engineer" - probably a good compromise!).
G
N.B. 5 years to do an Engineering apprenticeship, 4 years to do an Engineering degree, considerable years after either to be trusted out on your own!