Quote Dasius Last Monday
.... I'll say this on record: Everyone who is and has been a Patron gets a Steam Key. I failed to indicate any limits to Steam Key access. From now until the Steam release, unless otherwise posted, this is will continue to be the case....
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edit - If you stop being a patron, and end your account, this will no longer apply to you, You forfeit Patron data when you forfeit the account, which prevents Dasius or anyone else running a Patreon from knowing anything about your support.