If progressives are frustrated that relatively doctrinaire libertarians are attracting the attention and support of people who care deeply about civil liberties, why don't they work to offer some alternative? Guys like me will probably still prefer Johnson. But is it really the case that the Democratic Party can't produce a prominent civil-libertarian politician who Glenn Greenwald would prefer to Ron Paul?
That is itself a devastating truth about the post-2009 left.
As Election 2008 proved, however, it isn't impossible to change. Democrats can in fact unapologetically run against indefinite detention, excessive executive power, and needless wars, and get elected doing it. What's additionally required is a civil-libertarian constituency big and motivated enough to hold them to their promises. That is what progressivism apparently lacks.