A 66 year old has more experience doing timber work than an 18 year old young buck.
I'm 57 and have cut down many dozens of large trees over the last 30 years clearing land to build my houses. The real work is the limbing and feeding the chipper.
True, but an 18-year-old is much less likely to experience a heart attack from physical exertion in the woods.
My real point was not the age of the worker but the importance of the buddy system.