This reminds me of the pharmacists that decide what prescriptions they want to fill out based on their religion. Now cashiers are deciding what they want to sell based on their religion. Next, it will be the vending machines!
The pharmacists didn't want to fill prescriptions for abortificiants ~ drugs that kill babies.
I wouldn't want to do that either. Certainly there is no shortage of willing volunteers who, in fact, WANT to fill prescriptions to kill babies.
Customers wanting that service can go there.