If I ever leave I plan to but even if I was fairly vague, there aren't a lot of people that have been here as long as I have. If I mentioned most of the stuff that's progressively gotten worse it would put me on a list of maybe 8 people that had been here that long and only 3 of us in my position.
Griping without directly mentioning them is one thing, complaining on something specifically linked to them is another.