If it is the case that pre-1.22 saves cannot be loaded in 1.22 then I think that's the last straw regarding the Radio change. Backward compatibility is not a small issue, it should be a given in any software release! The ability to load old saves is important, both for continuing in-progress games and for the ability to download posts from the past (e.g. HOF games at CivFanatics) and to view them.
If pre-1.22 games can't be loaded then I think the best thing would be a 1.23 patch which puts Radio back in. And does nothing else at all, unless there's something else which must also be undone to make loading previous saves compatible. I hope Firaxis will consider doing this.