The BBC has many fans and many adversaries. Those who'd like to see it change include other media outlets, led by Sky and the Mail, and right-wing politicians who believe that Auntie is stuffed with Guardian-reading granola eaters (although it is always worth noting that some on the left see her as fundamentally reactionary).
The whole point of the BBC is that politicians should only meddle with it on very rare occasions. Yes, it is accountable to the public through parliament, and yes the charter renewal process gives ministers a moment of great power over the Corporation. But we should remain worried about Whittingdale's self-confessed free market conservativeness.