I was about to write the same thing. Making carbon fiber itself is a mastery class in non-renewable and non-recyclable materials.

But it enables a lot of the lightweight “green” things people can pat themselves on the back for, which is the majority of the point for many.

Better epoxies would help, but we’re quite a ways off.

Imagine if they could recycle fiberglass matrix composites? You'd get rid of a huge part of the reason for e-waste, the circuit boards.

You have hit the nail on the head. Except for very large structures with simple carbon fiber layup, actually recycling carbon fiber seems hard to make practical. But if the thermoset material can be removed, the result is a relatively low volume, benign waste.