There's constructive criticism and blunt/harsh criticism. Constructive criticism would be trying to help the artist to know where to improve and how to do so, and be polite enough about it. Blunt criticism is this: "Da fuk iz dis shyt! U call dat a fakin dr@wing?? U dru dis & dat rong, u stoopid bish!! U shud dye & neva dr@w ahgen! i h8 it and i h8 u!!!11!1!12"
And I can see why people would get upset over that but if it's constructive criticism they are being butt hurt about, then they're just being pussies.
Yes! I don't like when someone just says something sucks. When they actually point out flaws and even just that it's even better. Better if they point out how to improve. I personally care less about praise in a critique, as I don't ask for critiques to be praised on my work, that's what comments / favorites are for me.
I honestly don't mind if you are straight forward an harsh, as long as you know what you are talking about. Lol... and you give me some tips about it. Other that' bombs away... critique the shit out of it... actually... anyone want to critique my art now?
I think some people just handle things at the wrong moment. Sometimes I get people asking for help about something (such as the 'Hey I'm new to dA how does this work/what are llamas good for' simple question type), a critique, a longer comment, etc, when I'm really not in the mood for making a good response or looking at it. Know something that's pretty fucking simple to do when that happens? Not x it away or responding at the moment and saving it for later. It may leave people waiting, but that's better than giving them a slap in the face for taking the time to try and help you.
I believe the same method works if you are the type who easily feels insulted at first over a critique. Go away for a moment, do something else and calm the fuck down. It doesn't take THAT much energy to not make yourself look like a fucking asshole