once again another group of people who just want to see someone banned, it's pretty funny actually.
i highly doubt sharing your steam account with the person can be considered "key-sharing" because of the simple fact with a regular key, you can't lock the person out, it's a steam key, which cannot just be handed over to someone, unlike a retail blockland key.
and yes i do understand that the account was shared to play blockland, but still, he doesn't actually have the authentication key, so there would be no need to revoke it.