The decision to leave if every bit as important as the decision to join........and the manner in which you leave is as important as the manner in which you join - that flying start we all hope for.
If there are "issues" left over with the departure you can't concentrate on getting a good start with the next job (even if that "job" is only organising a happy and satisfying retirement for yourself). That's what the other thread is all about. To move on you need to feel good about what just happened.
If you can't trust those around you to give you a good send-off then organise your own. If this isn't a good time to splash out, then when?
But doing nothing and complaining about the result, whilst perhaps understandable, is a bit self-destructive in the long run really.