I don't know if we are talking about the same thing. I am taking the argument from OP about "people recovering from surgery might need electric assist to keep up with the A-group", and I'm questioning this need.
If someone wants to have some assistance, then by all means go ahead and use it. I'm just not seeing why someone would need to have this sort of assistance, unless they are just doing some poor post-hoc rationalization for their wants.
I was paraphrashing. OP's original comment said "For some guys a high-end electric assist bike is how they stay riding with the A-group while they're recovering."
What I question here is, simply put, why "stay riding with the A-group" is in any way important? While one is recovering from surgery, what is so bad about riding with a B-group? Or why not ride with that A-group, but for a shorter distance?