Yup, I know that guy, and he is absolutely right!
The key part being "if you find gold in an area". If faced with a mile of new area littered with nails, just where is the gold at? Rather than start at one end with a PI digging nails for eternity, a VLF may serve as a recon tool to maybe, if a person gets lucky, find an indicator nugget or two. Then, with the location narrowed down, bring in the PI and dig everything.
I know you know that. Every place and location calls for a different strategy. Dig it all is a great theory but other realities intrude. The main being how much junk there is and how much time is available to deal with it.
There are no doubt many places PI users have been avoiding for the sheer amount of junk. Old campsites in particular. We have all seen them and walked away from them when toting a PI. A good VLF could really pay off in such locations. As Ron's videos proved. http://www.detectorprospector.com/forum/topic/292-minelab-ctx-3030-finds-25-ounce-gold-nugget/
But once a given location proves to have gold, yeah - dig it all!