To be honest, I didn't like any of the performances broadcast either, but I find it hard to fathom how someone interested in the current "folk" scene of the UK and Ireland, - [ of which traditional music seems to be becoming an increasingly small part*, and that is something I deplore ] - could not have heard of Cara Dillon, "Lankum" [ changed their name from "Lynched" ], Eliza Carthy, Paul Brady and Donal Lunny. Apart from "Lankum", the others have been performing for between 20 and 40 years plus.
[* less so in Ireland, thankfully ]