"You can not make a 30 year experienced mechanic in 2 years."
Don't make it sound like someone flipped a switch and changed the crews. For the past hundred years, every time a mechanic has retired, someone else was promoted and some newbie got a job starting on the bottom rung. In three years you've got a mechanic with three years experience, two years later he's got five years...and 29 years down the line he's gonna retire too.
The problem is more along the lines that there have always been too many rubes, too much money
and people who are willing to ante up and not complain (we're taught in grade school
to be good droids and not complain) if the problem wasn't fixed. Some problems ARE incredibly difficult, but there are an awful lot of alleged mechanics who just aren't very sharp. Certified or not.
The same way that motorists on Route66 used to have their radiators and shocks replaced by outright thieves, who still play the scam on I95 and I80 and other places where they can readily shear the sheep.
And that's not my opinion--that's the finding of many consumer affairs office, investigative reports, and attorney generals who have caught them and convicted them, year after year. Boat mechanics? Maybe better, maybe more honest, but they're still only human.