I get it. What I wouldn't give to ride my bike again!
But you know, over the years I've been told many things by people who supposedly know best that turned out to be wrong. If it were me, I wouldn't give up on all that just on the say so of one PT. Maybe it would be better if you could just focus on your day-to-day progress, and look back once in a while to see how far you've come. And who knows? Maybe you'll show them. I'm rooting for you.