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.
I wonder what happens when they find out that you can do my.name+alias@gmail.com
they seem to have it “covered”
To be fair that’s quite easy to check with a simple regex, you can see that in many services that have cached up to that.
deleted by creator
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