Apparently, some found it offensive and the signs have been changed. It's a marketing faux pas, though. Not a political correctness or religious tolerance issue. Here we have a company in the business of selling stuff that failed to take into account the irrational eating habits of a large section of its customer base, and it probably lost a non-negligible amount of business because of it.
If not catering to your customers' irrational whims will hurt your business, should you do it? Or should you instead be engaged in business where success isn't dependent on appeasing your customers' irrationality?