To me the real reason to not do them is outlined in the "useless work" section. They add surface area, support and maintenance to a project for essentially no g

To me the real reason to not do them is outlined in the "useless work" section. They add surface area, support and maintenance to a project for essentially no gain. For a project as popular and visible as curl, I'd imagine avoiding having to talk about it, and dealing with feature requests and PRs on it alone makes not having an easter egg well worth it.