This makes me 😭
UPDATE: Thanks @nekusoul@lemmy.nekusoul.de for this update: The issue has now been commented on and was closed by the maintainer, where they explained why those blocks would be nonsense. But it appears the OP wants to still talk with maintainer privately about it.
Looks like you can even do this with iCloud accounts. They only let you have 3 at a time, but you can delete them whenever and create more as needed.
https://support.apple.com/guide/icloud/add-and-manage-email-aliases-mm6b1a490a/icloud