Given the intended context/usage for the term "tone policing," it seems kind of inappropriate to use it for arguments about elf games.
Fair enough, but I'm not really sure what other term to use for literally being told "we'd listen to you more if you weren't such a negative nancy."
Well it's really just common sense. I have seen a lot of your complaints with the system, and while I agree with some of them, constantly griping about them and then insulting the developers and those who disagree with you won't get anything changed, nor will it really ingratiate yourself with those you are trying to persuade.
We all get that you don't like the system. Really, we do - there are examples of you saying so in many threads. Continuing to remind everyone how horrible and broken you think WH40k RPGs are is just beating a dead horse.