It's because of Apple bullshit. We on Primal had to do the same thing to appease Tim Apple.

There's a requirement to give users an option to delete their accounts if you're working on a social network app.

It adds a simple "deleted: true" prop to your Metadata Nostr object and it's being checked on login.

Of course nothing stops you to just remove that prop and publish new Metadata Nostr object to your select relays. 🤷‍♂️