What are HN's guidlines on young people mentioning their age in a Show HN like this post here? Should we take it graciously, admit they are young and encourage them for what they did or should we point out not to mention their age?
IMO, if we take the age out, some of show HN's might not look very interesting. Same goes for a Show HN where someone mentions they are not a programmer and yet built a thing.
There's no official guideline (we try to keep that list minimal), but I think it's harmless and the main thing commenters should do is not complain about it. These complaints are always the same, always offtopic, and usually balloon in size to the point where the offtopicness drowns everything else. That's a terrible outcome for a thread like this.
Even if you dislike "I'm $X years old and I $Y" posts, it's not helpful to give a kid a grumpy patronizing response. We want HN to be a helpful community, not some weird age competition.
For whether age should be mentioned: Does there need to be a guideline? There are plenty of things that have no specific guideline, things which are fine to do or not do.
For whether there should be comments about age being mentioned: existing guidelines already denounce low value commenting especially at the root level.
IMO, if we take the age out, some of show HN's might not look very interesting. Same goes for a Show HN where someone mentions they are not a programmer and yet built a thing.