For example, I saw a post on Reddit where a guy made a game. It has a neat idea and implementation. However I noticed that the in-game clouds were extremely white, whereas the overall style has orange tones. So I mentioned about this inconsistency in my comment.
I have a habit of saying «cool, BUT it has this flaw». I know it's annoying, because that «BUT» devalues everything what I said before. It was even one of the reasons why I stopped talking to my friend, because I'm always kind of judgmental. So how do you handle it? Should I just mindlessly say compliments while suppressing negative comments?