@BeAware It’s not such a big Fediverse issue right now, but I’m imagining a future where the Fediverse is ubiquitous, and people are using Fedi replacements of current (closed) platforms, especially those where they have public profiles (GitHub and LinkedIn spring to mind).
Some might not care to have their profiles linked, but for anyone who wants to control their public image and Fedi presence, linking accounts and hosting them all on one domain makes sense (I think).
BeAware