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You needn't use your real name, of course, but for HN to be a community, users need some identity for other users to relate to. Otherwise we may as well have no usernames and no community, and that would be a different kind of forum. https://hn.algolia.com/?sort=byDate&dateRange=all&type=comme...
Gotta admit that Pi foundation never cared about batteries, especially since it's common with makers, audio removal etc...
Most educational content that involve the Pi tend to use system GPIO libraries and integration, making other SBCs or USB expansion boards difficult to use for newcomers. The Pi is a platform other than the hardware, their forum should be more welcoming though.