In fact, he is being asked to cater the wedding and to write something on the cake that he finds offensive (presuming he finds those prohibited actions offensive). Refusing services to blacks in not religious. Refusing to perform mixed race marriage is also not religious (no Biblical prohibition based on race).

Hobby Lobby is not being asked to provide personal services for a (insert religious objection like "gay wedding" here). The baker will sell cake all day long to anyone who asks. The decorations are his personal services specific to the wedding (akin to wedding photographers services).

Not nearly as simple as it looks. Can't wait to read what SCOTUS has to say.