I think this paints an accurate picture of what it feels like to receive criticism. Player feedback can be either affirming or demoralizing, but the latter variety often has a much bigger impact. I think this is especially true in modding, where you aren't charging or being paid for your creation. While making the mod is often fun, finishing it is often work, and the positive feedback you get from players is a small compensation for the long hours you put in fixing bugs, tweaking combat balance, and performing all the other tedious finishing touches. Therefore, when the mod is finally released and you get a negative comment - particularly if roughly delivered - it can easily get under your skin.
When I read the forums for, say, World of Warcraft or xkcd, I'm always amazed at how nasty things get. It makes me think, "If you hate it so much, why are you there?" But that's just the way it is, and excess exposure to insults can really get under your skin, make you doubt yourself, and interfere with your work. It's very sad, but you sometimes need to just protect yourself by staying away. Keep your brain clean.
However, disengaging your audience is not the answer. It may be good for your psyche, but it will also embolden your critics to know that the person they're slamming isn't around to defend themselves. You don't need years of game development experience to understand this. You just need life experience.



