I've always understood our use of the Famine song to reference the Plastic Paddys in their support - those with no real affiliation or basis of being 'Irish' but who claim to be so much.
I'd honestly never, contextually, considered that it was to be taken literally - maybe I'm in the firm minority with that one. Regardless, I've taken the club's request on board from the season before last - we're a club open to all and the discrimination has to be stopped, we just need to fight our own corner whilst respecting other groups.