You've already got your four, but I'll throw in my YES just for overkill's sake.
I had the same initial cognitive dissonance as Qik, I think, in that the Baronies hadn't thus far struck me as somewhere folks ran into magical counties, but your explanation works well, and the fact that this only happened about 50 years ago for some reason makes this work better for me. It's not been here all along, but rather just recently cropped up, disrupting the normal workings of the Baronies. Or, rather, it's been slowly creeping its way into its present disruptive form, if I'm reading things correctly. The insidious nature of that makes it work for me.

I had the same initial cognitive dissonance as Qik, I think, in that the Baronies hadn't thus far struck me as somewhere folks ran into magical counties, but your explanation works well, and the fact that this only happened about 50 years ago for some reason makes this work better for me. It's not been here all along, but rather just recently cropped up, disrupting the normal workings of the Baronies. Or, rather, it's been slowly creeping its way into its present disruptive form, if I'm reading things correctly. The insidious nature of that makes it work for me.