"... to store once and for all their Steem username and private posting key on a secure Cloud Firestore database, a solution provided by Google ..."
[emphasis mine]
... this is concerning for me. "Secure" and "Google" in the same sentence? Hmmm ... You presumably have far more faith in the altruistic intent of this global giant than I do ...
RE: SteemLogin - a new and easy way to sign in to Steem!