Or trying not to bring up the obvious comparisons to the current CCP government.
I have to agree to some extent that there is a tendency to avoid unsympathetic heroes in big budget projects lately. However, I do wonder if that is a bit of the Heath Ledger Joker effect. In other words - and honestly, this also applied to the Jack Nicholson Joker - how do you get a superstar or Oscar-caliber actor to play the "bad guy" in your movie? Well, you have to really pump up that role.
I mean, the Joker was not sympathetic per se, but you definitely could see his point of view AND he was the real attraction of The Dark Knight. There are protagonists and then there are characters that light up the movie - and those are sometimes the same thing, but in the current tradition of blockbusters, it's the villain that lights up the story.
In basic story terms, we have the hero (or protagonist), supporting characters (deuteragonist, sidekicks, love interests, etc.) and the villain. In the basic plots of most adventure or heroic literature, the hero is the person who actually supports or is working toward the good of all the main supporting characters, and the villain is the one character who clearly does not support anyone else in the story - even his or her own minions. The supporting characters support the hero because they are invested in his struggle and the villain opposes the hero because his story interests oppose those of everyone else.
That's very basic and the trick is to develop the baddie so that it is justifiable why he or she opposes everyone else in the story.
However, at the same time, it is incredibly effective to have a hero that is really unsympathetic - the "heel" - as every time that villain succeeds in the story, it just builds up the tension in the audience that really wants him to receive his just comeuppance. It's the basic appeal that kept pro wrestling alive so long. The bad guy is someone the fans hate and love to hate and he keeps winning matches over people the fans love again and again until finally he faces the fans' big champion who in the last moment - probably due to some arrogant posture the heel takes - pins and defeats the villain.
So, I think I agree that having too many sympathetic villains over and over in a story eventually will degrade the emotional satisfaction and appeal in a genre or series of films.