I will say - I was a very frequent Jump user in SF, and before you shout "waste!", if you haven't had the experience of riding on one of the older bikes past it's useful life, you should consider this:

Jump switched over to a new model within the last year or two. Their older bikes - while yes, built like tanks - also aged like tanks (after battle). They were BEAT UP. The frames were mangled & scratched, the drivetrains were barely functional, and the brakes barely worked.

My general strategy for riding a Jump was to find the closest bike with the highest serial # (assuming it would be a newer one), because getting an old one was just not fun.

Anyway, this is all to say: While yes, almost everything can technically be repurposed, I wouldn't want to spend much time on an older Jump bike either first or second hand.