The evolution of technology....we need to keep up with the industry trends if we want to survive in the business......a tool is just a tool, the difference is the person using the tool.
A DSLR is modelled to be like SLR, so there's no excuse about the workflow in using a DSLR over a SLR these days....even my 60yrs old dad uses DSLR now.
at some point, I admit that I am sometimes guilty of having the mentality of the 'old-school of thoughts', but I think the original author was trying to stress the point that the basic of photography is still very important. (eg. Framing, lighting, color, subject matter, timing, precision, etc etc...)
Perhaps the person who made that statement thought that the new generation of Digital Photographers lacked certain skills that the old-school film photographers had....