It's idiots like that dipwad that make people not trust any mechanic. My dad was a mechanic for about 45 years, my brother's been one for 30+. The family auto shop put me through college and it was our, and now my brother's, sole income. It's a little shop, four bays and three full-time mechanics, in a small town. They get their business by being responsible, charging a fair price, and doing a good job.
Shitheads like that "stangman" just make people think every mechanic is a ripoff artist and they aren't. Most of 'em are professional and responsible.
And fortunately, I drive such a beat-to-hell truck that you won't catch a tech burning rubber in it. Now, moving some furniture or hauling some mulch on his lunch hour, maybe...