Surely "Erin Go Bragh"/"Duncan Campbell" is advocating change?

Come all you brave fellows that here of this song—
I dont care a farthing to where you belong—
For I'm from my shore, in the Highlands so braw
But I ne'er took it ill when called Erin-go-Bragh.

I'm pretty sure the anti-bigotry message there is what Dick Gaughan had in mind when he revived it.