It might be, for many (not for me, for example), but it certainly isn't a defining or necessary feature. Future atheists, for example, with entirely different c

It might be, for many (not for me, for example), but it certainly isn't a defining or necessary feature. Future atheists, for example, with entirely different concerns (and eschatology) would still properly call themselves atheists if they're without belief in some deity. The average liberal might like their caffè latte, but neither classical nor progressive liberalism contains a commitment to certain beverages.