Give the general public access to information they -think- they understand and watch cars start to blow up at red lights.
I am a bit of a shadetree mechanic and have never ran across a late-model vehicle I couldn't diagnose and fix.
If I can do it, surely these fancy "SAE Certified" mechanics can, right? Oh no, you don't suggest... that... maybe, they're not all they're, um... cracked up to be? Maybe... they want a little midget to jump out of the dash and tell them exactly what to do?
This isn't about DRM, FFS, DMCA, PCM's, ECM's or any of the other fancy little acronyms these folks would like to blame their lack of skills on. It's good ol' laziness and lack of education.
The auto repair industry has been a magnet for unqualified, less-than-desireable humans for decades. They're not trying to make the leap from ignorant to ignorant victim.
Oh, the irony.