They're annoyed at people shamelessly publishing low quality crap. Calling it out is a way to raise standards back up.

That is the way of the internet unfortunately. Instead of simply appreciating something, it's important to find a criticism and voice it. That way you're 'adding' to the conversation.

I mean look back at HN classic posts like the initial Dropbox announcement and the classic: this is nothing more than a wrapper over rsync, etc.