I didn't read Counterpunch until last year, when I discovered Hudson there. Of course, I haven't read Roberts's book. So I've been inclined to interpret his choice of topics as an expression of a psychological process, rather than fee-for-output if you will.
It's been said somewhere, extreme "conservativism" and "liberalism" meet at an intdeterminate point along a circle of political expediency. If so, I nominate Roberts's for most agitated photon on the wheel. Diversity is the key to economic and political evolution.
You can find more of his writings, and similar articles, at antiwar.com, which is a right-libertarian site; the fact that a lot of articles are shared with counterpunch does lend some support to your claim.