Traditional Irish Music
As I dislike Punk and Indie music, I slightly agree with your point. However, many real Irish people - those of us who actually live in Ireland, not places like London - would disagree with you. I happen to love the music of the great Donegal band, Clannad - arguably the most successful Irish band in history. Clannad's music falls into your category "modern folk music" and some of their music contains elements of Jazz. Irish traditions are changing and evolving and they always have.
Greetings from Seamus to the Professor
That's not exactly correct - there are many irish bands that still play live - and they sound great! I saw some of these bands and can definitely say they play very professionally. Moreover, still many people wish to hear Irish folk music at their wedding or event thanks to famous pop artists that play folk!!