I think you are getting paranoid here.
When your winger is running rings around the defence and then failing to clear the first defender it is incredibly frustrating. Yes there were involuntary groans. However Aiden McGeady is one of our more popular players. Some of the stuff I've heard about Glenn Whelan is shocking but I don't think anyone is being anti Stoke City or anti Dublin.
Can I suggest if you are worried about our fans being anti Celtic that you go and support Northern Ireland. Paddy McCourt received nothing but cheers from their fans last Wednesday.