I don't get that meaning from the info you linked. Furthermore, he has railed on about owing US income taxes so long and so often I've lost count.
(I did notice that he has apparently still not renounced his US citizenship.)
But otherwise, the guy's an idiot:
See more at:
http://www.boris-johnson.com/2006/08/29/american-passport/#sthash.6K1t3wBa.dpuf
He's a fool. Europe adopted similar rules after 911. My wife was born in Italy and for many years traveled under her Italian passport. Later as an adult she also received a French passport. So, for many years she was a dual citizen. However, post 911 Europe allowed only one passport and her Italian passport was stripped leaving her with just the French one.
He could be viewed as fortunate that the US is allowing him the two passports. He's twisting this privilege granted by the US into some sort of complaint about arrogance on its part.
In any case, the US is not the only that requires its citizens to use that passport for travel in country:
http://www.stylehiclub.com/tips-gen...asked-questions-traveling-with-two-passports/
Fern