The project simply has "game inspired menu system". OP, probably unaware for what gamify truly means, used this term. That said a gamified system monitor will've been quite funny project to see. "Achievement unlocked: Run out of memory!"
The poster appears to be Indian from their HN profile. How about we extend some grace for a slight misunderstanding of the nuances of a term that isn't particularly common in day to day discussions?
I see your point, but I think the anger comes from the fact that
1. the title was unneccessarily editorialized,
2. the word gamified is used wrong here, and
3. There was never any good reason to add the word gamified to the title, other than adding a buzzword.
The feedback people give is probably a bit harsh, but I find it understandable. If you don’t know what a term means, don’t use it - especially not if it’s completely unnecessary as in this case.