These devices fall far behind the industry standard hardware security requirements GrapheneOS has.

If they're only supported on a single line of devices made by a single company and there are thousands of devices made by hundreds of companies, then that's not industry standard. It might be better than industry standard, and it might be good, but it's hardly common.

Most of the hardware security requirements are met by multiple lines of devices. The issue is, not all of them are met. Many have poor updates or intentionally cripple standard features for anti competitive reasons.

So no, they are not "only met on a single line of devices", in fact Samsung gets super close, but they remove yellowboot support and cripple the device if you unlock the bootloader.

Wasn't it just explained they meet the criteria?

Fairphone and Nothing do not come anywhere close to meeting the criteria for GrapheneOS device support.

Maybe I didn't put it clear enough: __just the first__ GrapheneOS requirement leaves us with three brands. There's 20+ more items on the list after that, Nothing and Fairphone likely fail on them.

Fair.