Do you have any evidence that these technicians were incompetent? Has the service been done to the correct standard?
Our close friends' oldest daughter has worked part time since she was 16, all the way through her GCSEs and A-levels. She's been able to transfer branches within this job to her university town and part-fund her studies through it. She is hard-working and canny and would be worth employing anywhere, but she will have to fight attitudes like this before she even gets a job, let alone when she is in it.
Think you should probably re-read my post again. Hopefully your friends oldest daughter can read and intrepret the tone and context of a sentence better than your good self!