Damn, Jimmy done smack-down
Anyway, I'm reading "Judges and Professionalism", but I feel like the mentality here is much akin to a deviantart sonic fan art circle. First of all, as someone who is constantly seeking out and dealing with criticism on a day to day basis, I thought Jimmy's feedback was actually extremely direct. I hear from people I respect and admire things like "that part was just downright awful" on a regular basis. And of course, that bit of ego that comes with being human does feel bad each time. However, that bit of ego also gets the message and I spend the next two weeks fixing whatever was wrong. Perhaps I'm not speaking for everyone, but at least for me, a site like this is about showcasing work and improving as a musician--getting my ego stroked is a nice perk, but only comes as a reward to whatever hard work I have to put in first.
Second of all, when we talk about professionals in the real world, chances are the language you'll hear really wont get much nicer than Jimmy's post. If you get hired to make music/perform music for somebody else, if they don't like what they hear they're not going to let it go nicely because they don't want to hurt your feelings. Even worse, if they do like what they hear they might not even express any sort of satisfaction. What's important to them is that they get what they want.
So this is why in general, when dealing with feedback, I follow the "leave your ego at the door" philosophy. Take any criticism, no matter how it's worded, as only rational, literal feedback. Avoid attaching an emotional element to the feedback, as well as to your response. This way, it leaves the musician less vulnerable and allows him/her to accept the information more lucidly.