The accusation of "negativity" is an easy label to apply to someone who disagrees with you or thinks you are wrong - if you are a controlling bully.
When I was at work I had the same thing levelled at me sometimes, when I pointed out flaws in their reasoning or I was not repeating the mantra of change when any fool could see that proposed changes were going to work against our department's interests. I get the same thing for criticizing the WTS . I hear.... "So what's your solution to the world's problems then" ?