the bitcoin-wallet-keys-YYYY-MM-DD format is an old format.
I already managed to decrypt and view the priv key of an old wallet, it's just matter of scripting and programming.
If you need help I can tell you how to do it.
P.
Bitcoin.com is just one domain name used to promote Bitcoin. Bitcoin.com is not an official website. Just like nobody owns the email technology, nobody owns the Bitcoin network.
As such, nobody can speak with authority in the name of Bitcoin.