"As I libertarian, I support freedom, both economic and social, and oppose any restrictions on them. Seeing as it has historically been the government who has taken away liberty through its expansion, historians who portray such growth in a favorable light are inserting their own anti-freedom beliefs."
This reads like old-time Marxists ranting...
If you don't insist that any historical perspective on any government action is innately bad (irrelevant of analysis of actual effects of government action), you are inserting your 'own anti-freedom beliefs' and your history reads as 'hagiographies, substituting thoughtful analysis for blind reverence.'
Libertarians pretend to be aloof independent thinkers, but this chap is simply an idealogue, replacing Marxist egalitarian ideas with other idealist notions such as 'freedom', replacing the irrational premise that 'all wealth is wrong' with the irrational premise 'all government action is wrong'.