I don't think this is necessarily a developer-specific issue. You show something off to the internet-at-large and they probably won't have nice things to say a

I don't think this is necessarily a developer-specific issue. You show something off to the internet-at-large and they probably won't have nice things to say about it. This isn't necessarily because they're unimpressed though. There's only so many different ways you can say "great job", compared to the potentially infinite ways in which you could find a flaw in someone's work and highlight it in a constructive or unconstructive manner.