So I mean, if there's an extra learning curve to it at all, that's naturally gonna shave off a layer of the most casually-interested potential users right there.
There are a number of mods offering that function, tho, and of the few I've tried some were easier to get working than others, and no two were exactly alike. That was mildly surprising to me - I would've thought that'd be a more popular mod feature. I actually made a thread here a few weeks ago trying to see what music people used if they did use a custom radio setup, cus I assumed it'd be a more common practice than it apparently is.