What is good feedback?

Hello.

To all of you who bemoan “whiners, crybabies and snowflakes,” who give criticism on this part of the forums, where do you draw the line between legitimate feedback and whining?

Or do you think game feedback should just straight up be deleted?

I would like if you could give some examples of things you thought were good feedback, but only if you’re the type of person who typically calls others whiners and crybabies in these topics.