I work in the refurb department of an e-waste recycling company. In my n=1 data point, some server drives are shredded/destroyed, some aren't (maybe half) before they reach my team. Of the ones that aren't, most are too small to sell, or have bad reads or reallocated sectors. Maybe 10% are fit to resell, not zero.

I work in the refurb department of an e-waste recycling company. Some SSD brands are more durable than others. In my experience, a greater proportion of Intel and Micron SSDs are (or have) failed than any other brand. It's as if sysadmins are like "Intel is a good brand, lets use these SSDs to cache our HDD storage array", then throw them out when they turn read-only.