Lots of people are going for the low-hanging "lol Rob Liefeld" fruit, but he's not the only guy who's complained about editorial fuckery -- we've seen Rozum, Simone, Perez, and Cornell say all this stuff already, and all of them are actually good.
Bridge-burning's a bit of an exaggeration (unless we keep it in the original context and remember that Homer did in fact get his job back by the end of the half-hour); Liefeld brings in the money and while I can't imagine he's won any friends in editorial, I doubt he's lost many either.
Liefeld's still a name and a draw -- I don't know why, but I accept it -- and I'm pretty confident he'll be back at DC in the next few years.
Anyway. While "Rob Liefeld going away" is not a problem, "editorial shoving people off books through obsessive micromanagement" is.
My favorite books at DC are currently Dial H, Animal Man, Frankenstein, and Demon Knights. It is not a coincidence that all of these books exist on the fringe of DC continuity and not subject to whatever major narrative editorial is trying to construct.