When you make a post that reads like a lecture, some people may get the feeling that you're trying to be over-authoritative which obviously not everyone likes, or that you're assuming none of us already know what constructive criticism is. Especially in writing only, it's hard to get across the right tone that everyone will be fine with. I don't doubt that you want what's best for the community, nor am I saying I don't disagree that the way people post their criticisms on these forums could be improved on the forums. Perhaps it should be looked at from both sides: improving constructive criticism and also learning to have some leniency where criticism isn't constructive as words alone are one half of communication and ask for the constructive bits if it's lacking. EDIT: PS: Writing a post on a phone sucks