It _does_ matter as those edge cases would be the difference between a working product and something that's trivial to topple over with `"; find . -exec shred -f {} \;` if your agent is used for the backend. There's also a lot of boring problems to solve backend wise (migration, failure mitigation, suitable performance, etc) that need to be considered for a site with significant traffic even for "basic functionality" (a service that's down cannot serve it's users).

The frontend of HN doesn't need to be complex and I'd even argue that it's better for being simple as it's then easier to parse, takes less effort from the client to render, certainly less battery on mobile, and so on. Web applications don't _need_ to be more complex than the problem at hand where the frontend itself is just enough of to display content in a comfortable enough format for human consumption.

Unrelated to the topic but related to the thread: if you edit a message then please keep the original message around to keep context for others that read this thread if that edit would change how the message was interpreted at the time of the reply. Non-functional edits (e.g spelling corrections) are fine without notice.