Actually, I really like this feature . Holiday music is an American term covering all sorts of material that is often called “seasonal” elsewhere and is usually referring the Christmas Holiday period (I have no idea whether other religious or other “Holidays” are part of the algorithm). The Christmas Carols that sit in my collection being played n the middle of summer is a pet peeve. Having the ability to feedback to ROON to avoid selecting music of this genre is very helpful.
Greater control of how ROON selects the music for the radio is very much appreciated, by me at least.
A useful background from ROONs CTO on how ROON Radio uses the feedback :What does Roon Radio actually DO?