A friend of mine is an ex-randonneur with a wall full of K-hound medals and good PBP results. Then he got A-fib, had ablations (plural) but still has to keep his HR below 120. He can ride anywhere he wants on his pedal assist e-bike and for as long as his battery will last. On a conventional bike, he simply can't ride anywhere fun enough. The joy was missing, but he gets it back on the e-bike. I don't think his is a unique story. I went to the 80th birthday party of a female friend the other day. Today, she's doing a 40 mile group ride with 2700' of gain - on her pedal-assist ebike. She founded this group ride series about 40 years ago, got the e-bike a couple years ago.
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Results matter