> Something that's mostly aluminium, glass, silicon and silver can't be recycled?

There's no point in engaging him, he already is moving the goalpost of the discussion however it fits for his opinion.

I mean, we're talking about solar panels that are made of standard materials vs. uranium-enriched fuel rods that have to be stored at least a 100 years in salt mines in the middle of nowhere, without any possibility to recycle them anyhow. Let alone leaving what happens with those power plants after they've been shut down.