I use iTunes Radio all of the time. Very disappointed to hear about this, as Beats 1 just doesn't seem to play the sort of music I'm interested in hearing.
Also, one of the main reasons I subscribed to iTunes Match was so I could listen to iTunes Radio ad-free. I don't consider that a "perk," but rather an integral part of the Match service.
I was going to do that back when iTunes Match/iTunes Radio was released, but couldn't because I had more than 25K songs in iTunes, and I simply would not listen to iTunes Radio (or any other radio) with ads. Now that I am (a very happy) Apple Music member I wouldn't mind trying iTunes Radio again, add free - but I am not sure I understand what is happening: are they eliminating the add free version of iTunes Radio as well or will its existing continue for Apple Music members?
Lastly, to all the Beats 1 haters - of course we each have our own tastes: but I have found the Julie Adenuga, St. Vincent's Mixed Tapes and Elton John's Rocket Hour to be pretty great shows.