I don’t think it is an apt analogy if they don’t normally serve beef (for example). Most of the lefties I’ve been arguing with are framing it as “If you serve beef, but won’t serve it to me” as the foundation for their complaint.
In the case of the Washington florist, she sells flower arrangements, but she declined to accept a work order to create a particular floral arrangement because she found that specific request repugnant to her moral sensibilities.
We need to be careful and precise in our analogies (IMHO).
“I don’t think it is an apt analogy if they don’t normally serve beef (for example).”
It is apt.
The bakery does not normally sell the product in question either.
The Indian restaurant does not sell beef due to religious principles.
The halal butcher shop does not sell pork due to religious principles.
A wedding cake is not a gay sex cake. Selling them a cake with bride and groom on it should suffice. If they want to have something different, they can change it or get it somewhere else.
How about a clothing store that doesn’t sell larger sizes?