I don't necessarily agree the author. For example, if someone wants their privacy and wants to delete their Facebook account, when you search the account it sho

I don't necessarily agree the author. For example, if someone wants their privacy and wants to delete their Facebook account, when you search the account it should say the account does not exist. It doesn't say it's gone. It just say it is not found. 404 has a good security and privacy implication. For example, when you turn a repo to private and anyone tries to access it without proper permission should see 404 instead of seeing 401.