I never heard Ewan MacColl attempt to sing any songs in Scots or Irish Gaelic. Neither did I hear him claim to be a "leader of Gaelic culture". It's only you who is obsessed with this, ollaimh.

I also feel that obsessively labelling people as "anglos" or "gaels" (or 'hispanics' or 'canucks' or whatever) and putting them in opposition to each other, because of historical injustices, is a bit creepy, unhealthy and unecessary. I don't know anyone in the UK folk world who is an "imperialist" - and Ewan MacColl certainly wasn't one.