"Then, a further slap in the face is we all have to sit back annually and take a tech quiz (i.e. get tested) on systems or knowledge that we have never been instructed in."
Reality check! The tech quiz doesn't test you on systems or knowledge at all. It is just a regulatory box ticking exercise and a challenge to how well you can use a search function! Just get on with it....and then spend your time learning about your new amazing, similar to an A30, A50.
Always interesting to see reactions from different people. I'd have just answered the A50 questions if they had appeared and hit submit. I'm not on the A50 but don't think passing the questions would be a big deal even without training.