I understand that anyone can be PA at times - things like clearing the throat and pointedly looking (instead of saying 'there's a queue') is Passive Aggressive, and also that sometimes the alternative is to be constantly at odds with a difficult person.
But when the reason for the behaviour is to get out of doing what you are paid for, or to otherwise make life easier for yourself at the expense of others, there is no excuse. It might achieve the end result that the perpetrator wants, but setting out to 'get one over' on people and doing it in such a way that the victims can't even confront them about it on an equal footing has to be premeditated. The notion that anyone who disagrees or tries to achieve a different result is 'unkind', or 'a bully' means that the perpetrator is starting out from a position where their own superiority or 'rightness' is just assumed. They aren't interested in what is 'fair', or what is 'right' (where those things apply), or what others would prefer to happen, but just in getting their own way, and having that 'validated' by those in authority.
Where there is a difference of opinion, everyone thinks that they are right, at least at the start, but in adult situations there can be negotiation if everyone states their case. When one person cries foul, or goes off sick, or complains to the boss (or the union if the boss is the one who has upset them), and claims that everything is personal, however, it is impossible to move forward without life becoming a long and tedious battle.