Read our rules, and then comply with them. As noted, if you want to re-frame your argument in a way that doesn't make broad-based generalizations about the entire fan base, please do so. Our rules provide:
Do not label fellow posters in a way that is likely to provoke a negative response.
Do not start threads or make posts for the purpose of "calling out" other posters.
If you believe others are violating our rules, please report those posts, as many of your peers have done today. In general, though, yes, we allow "negative" posts, as we don't censor posts based upon negative or positive opinion. "Negative" posts are okay, disrespectful ones aren't.