I definitely wouldn’t engage. If you made a comment already, leave it at that. You aren’t the only one questioning these “just one metric” tests for longevity.
One quibble though, I thought the point was if you could do it once. How many reps has nothing to do with it. It’s mainly a question of balance/flexibility/proprioception. I do notice that women do it much easier than men (the family has done it a bunch at holiday gatherings). In our case our very fit elderly folks (80s) could not do it and we didn’t certainly want them to hurt themselves trying! However, they can get down on the floor and back up.
Sadly the online fitness space is filled with grifters, as perhaps health always has been (snake oil). Very hard to separate good advice and science from the bad. Where YouTube can shine is when you see a slow development of information and inquisitiveness and you can see the personality of the fitness adherent and make your own decisions. The reverse also often happens, especially with fame and money.
The longevity grifters are maybe more terrible… Peter Attia, Bryan Johnson, the Stanford dude, the doc who recommended metformin for anti-aging, etc. Attia was saying VO2Max is the key to longevity, and now that’s back in question. Attia at least may be open to questioning his approaches and revising. Johnson seems mentally ill.
I really like this guy I AM LONGEVITY, who takes all those guys to task and cites scientific studies. His thing is motor units, and the neuromuscular connection. Do I take his beliefs as gospel? No. However, his inspiring example also generally won’t harm me (unless, as with anything, I take it to extremes and injure myself).