Sorry dude, I seem to be rubbing you up the wrong way - I don't mean to be dismissive at all.Yes, it does! Why so dismissive of something because it isn't a form of art you personally choose to explore?
It's just ... well, I think (and apologies for philsophising) the essence of art is communication, and to me it seems that with literature from a different culture the barrier to communication that language creates is much less significant than the cultural barrier. Like I could learn Swahili in 6 months, but to understand Swahili poetry I'd need to live in the places where it's spoken every day and to understand the culture in which it is spoken.
Similarly in the case of Ireland I think the cultural barriers between us and our past are far more significant than the language barrier, and therefore if everyone in the country started speaking Irish tomorrow if wouldn't necessarily connect us to our literary heritage any more than we're connected to it now, it'd just change the language in which we express ourselves now - and I don't see where the good in that would be