IMO the first part of the article isn't that far off, but the author fails to explain how inaccessible oil of non-biologic origin will be cheaply obtained. There will always be LOTS of expensive oil for processes and uses that can exist with EXPENSIVE oil-peak CHEAP oil is far in the past and the decline of CHEAP oil is the real issue. The entire global economy was built up with CHEAP FF as an energy source.

Nicely put. I think even when EROEI is below one there will be a market for oil, just as there is for other materials that don't supply net energy. It will just stop being a net energy source.

If you're using oil as a feedstock for polymer production, say, rather than as an energy source, then it has no ER and EROEI analysis doesn't apply.

Good point. But even if you are using it to power your hummer or war jet, it won't be extracted because it gets you net energy, but because it provides energy in a dense, liquid, easily transported form that suits certain functions, wasteful or not. Essentially it will be a handy carrier, rather than a source, of energy, like electricity.

Yeah, I agree. The military will undoubtedly want liquid petroleum based fuels regardless of how expensive they are.