There's enough freedom of speech to say things about Russian president either. It's probably OK to criticize the government because nobody really cares about who tells what. Russians, of all people are probably the most distrustful and suspicious kind in the whole world. Thus, nobody really cares about who tells what (and neither does the government). There are two reasons for this: a) Everyone knows that every official, every man in the government and the Duma are corrupt criminals anyway, so nothing about them would really surprise people; and b) Nobody really trusts journalists or politicians enough to take what they say or write at face value. Everybody lies.