The essence of supporting a football team must be a woman then, since this is Your response to my complaint that people keep complaining. Yes I have no idea about it, I support in another way, hopefully it does not rule me out as a supporter, what would You say?;) If you agree though, then complaining is not really an essence of supporting, is it?
We have learned about human nature well enough through centuries. Human nature is emotional and reactive. Education, good patterns of behaviour around (lets say experience) allow people to move away from natural characteristics. To a greater or lesser extent.
One area of education is called ethics. Criticising (or, more often, insulting) any member of the football community who is not from Manchester City (and often, indeed, City), including for, for example, appearance or manner of speech, is unethical according to any ethical system.
Banter has its rights. I get it, I like it to some degree. Cause of that we have a bit lowered standards of ethics among sport supporters and its fun. But on the other hand I dont like when its just a pure hate.