He is not exactly wrong... email could be a bit better phrased and mandating X hrs may be a bit extreme. Overall though his main point about a great product not being built over the phone IMO is correct. At the very least you stand a substantially smaller chance of doing so...
I think the part that people most take issue with is the "you have to spend 40 hours in the office (the other 40 hours you are expected to work per week you can do from home)" part...
