Some people lack the dedication to actually step up and to do something but there is also a considerable group that was discouraged from trying to change things, by being ignored, patronized and underappreciated, in the end losing motivation and moving on. If the situation in that regard, after your return, is changing for the better (so it seems from the outside, at least some things are being pushed out more often), good, best of luck, but the staff certainly wasted a lot of potential over the years, with bias and indecisiveness being crucial in that process.