As I've said before the Scots and irish have been moving back and forward for over 1000 years. It's just that some people seem to choose where their descendants were in 1690 as an identifier. very sad.
If English, German and French fans can put up with 1000's of Scots in their home sections, I think it's only fair Scotland fans extend the same courtesy.
I'm sure there are bigots who happen to support Motherwell and others. I know of one person who used to follow Thistle and was a member of the OO. But there are 1000's who follow Rangers BECAUSE they are bigots. Do you see the difference?