The official criteria is based on the Beighton score, I think the official thresholds are too high so this test has a bunch of false negatives. I think people can be only mildly hypermobile, especially men, and still show up in the long covid cohorts much more often than they should. It's considered a spectrum, hypermobility spectrum disorder (HSD), where on one end you have Hypermobile Ehlers-Danlos syndrome hEDS and on the other end you have generalized joint hypermobility (GJH). Even GJH shows up in Dr. Jessica Eccles Long covid research far more that they should which would be weird if such hypermobility was truly benign.

https://www.ehlers-danlos.com/assessing-joint-hypermobility/