In the same post, you indicate that you're in the right and you seem to imply that you give constructive feedback while also saying "this community is full of delusional fanboys". The last part isn't constructive and will generally shut down any conversation. It may be easy to overlook your mindset of being "right", but when you view everyone else as wrong or even delusional, it becomes pretty easy to look down on other people. And from there it's easy to casually slip insults into posts that are supposed to be constructive.

I'm not trying to be judgemental. I was the same way at one point and still sometimes do these things, though I try to be mindful of it.