If we hold ourselves to a higher standard here individually and collectively than other forums, I don't see that as negative. I myself have no need to judge others on skill levels, and we can't forget we should we!come all levels.Keep in mind when posting publicly, some just want to share without looking for a response, some solicit help through asking for comments, and some just want to show off..
That said the opinions of others is important here, and once you put it out there it becomes fair game. I often solicit critiques privately. We do have a mechanism here to communicate that way and perhaps that is the best way to convey a helpful criticism. We don't need any "Simon Cowell"s here to provide embarrassment and drama, do we?
And if you perform publicly, the audience and the one who signs the check are the only ones you have to impress..