this is not a complaint, just asking how this is relevant to HN since the post didn't have any particular context. Clearly, this is a very interesting topic given more context and as the rest of the comments on the post do.
re: context - It is interesting, that is the context.
You can flag a post if it seems “not relevant” or “out of context” like the GO said. IMO that’s only really for posts in New or if you happen to find something off with a post after reading it. In general, I don’t think that should happen much on the front page - if it’s there it’s usually an indication that people found the post interesting!
