I'll keep my answer short, because some important points have already been made.
Our job as moderators is to keep this forum nice and clean. This is why we have established a set of rules, which we try to enforce very strictly. Please understand that that is necessary to keep things in order in this community, it is never meant to be taken personally.
I admit that it is sometimes hard to find the right tone. And sometimes we don't have enough patience to even try our best. I'm sorry about that, but it happens.
We're trying to do better on that front. And some tools we'll create will help us with that, such as private messages or moderation helpers like canned replies.
Please know that all positive contributions to this community are very much welcomed, respected and valued.