Yeah, the surgery itself these days is ridiculously easy. He can probably ride fine right now. But messing with those cardiac nerves seems like dark magic to me. Sometimes it's a miracle. But sometimes it goes south.

I had a buddy in his 20's who had it done a decade or so ago. They messed up and like overdid it, so while it fixed the arrhythmia, it also destroyed his ability to get a heartrate over like 130 bpm. Now he's got a pacemaker for the rest of his life - a kind of "sports" pacemaker that just kicks in when he's working out and needs a high HR. But his peak capacity is forever diminished.