I believe the same comparison was put on here, nothing to do with being anti gay, more to do with it being a business and not being allowed to refuse anybody just because they went against your beliefs.
So, not so much homophobic as giving an example. Might be a bit extreme but she has a point.
As to sacking her, well, the clue is in the title of the show, Loose Women, meaning they discuss topcs that are in the news etc and give their own opinions.
Normally light hearted stuff, perhaps they could concentrate on that side of stuff, so as not to offend.