As far as I understand it, electronics are recycled by crushing them and extracting a handful of minerals - e.g. gold, there's more gold in circuit boards than the rocks they dig out of gold mines I've heard.

The rest - which by mass, of course, is something approaching "all of it" - is mostly toxic fibre glass, epoxy and plastic that we don't really know what to do with. It's bad, even before you start talking about all the electricity and heat that was used to turn it into electronics in the first place.

Amazon has a reuse program for old hardware[1]. Disks will be shredded on-site and then recycled. [1] https://www.aboutamazon.com/news/aws/how-aws-data-centers-re...

While there are probably more modern servers around now than ever before, from browsing serverhunter.com there seem to be a couple of cliffs where older CPUs gets rarer, one at 2017 and one at 2014.

If by recyclable you meant buying old racks of datacenter servers to reuse elsewhere, even if possible, it's not very practical. Servers are super noisy and may have exotic power requirements.