Bill is a good guy, and has a point... I don't know all the conversations he might have had with everyone, but Dino these days is almost as good as SYN in my opinion for 90% of the cars out there.
With the exception of cars that require SYN due to severe operating temperatures both hot or cold or people who want to run extended drain intervals there is no doubt SYN holds up better under these conditions and worth the extra cost.
I'm with Bill when he says use Dino and don't waste your money unless you really need to. (remember that a good majority of the cars out there run on whatever bulk oil the OC place uses and most people push their oil much longer than they should and these engines still live to see 200-300K KM (120-180K miles) without issue!)
I could get away with running Dino in the winter up here, and my engine would last a very long time, but not as long as I would like to see it run because I'm a junkie and choose to run SYN to squeeze as much engine life out of my engine with the least amount of wear possible in my climate/driving conditons.
I have UOA's to prove this and the horrific noise I hear for 5-10 minutes on very cold starts using dino that I don't have with synthetic but they aren't terrible just show slightly more wear metals than SYN.
The ones for my SYN runs in the winter show below average wear, and the ones with DINO show average-slightly higher than average wear. WOOPIE DOO!
90% of people will not experience this unique situation or the situation where SYN is absolutely required. Nor do 99.9% of the people out there really care about their oil so Bill is right IMO.
I support his views, but choose to run SYN because of my application/climate and because I don't pay for it. It's covered through my works mileage allowance.