A recurring thing in punk/cyberpunk culture is that the existing system is overbearing, and can't be removed. So the punk elements live in the shadow of that system, and thrive in the cracks, the neglected parts. That's usually why (cyber)punk characters are bottom feeders that do stuff that is either not well known, not profitable, or too risky.

Solarpunk usually describe societies where the negative aspects have just disapeared, and been replaced by stuff that the genre proponents enjoy. From what I read, the claim is that the "punk" aspect is the rebellion against negativity. But that's not something we can see in their production.