(I need to recheck that I am referencing the current edition of the rule book. Or someone might check for me, and reply in comments. I'd appreciate it.)
Which is, situationally, "cringe-worthy" because I've seen some people who are not practiced in competition use their 'off hand" to direct their pistol into their holster by placing their off-hand over the muzzle ... literally. Rare, but not unknown.
The best you can do, as a "Range Officer" or "Safety Officer" (depending on your competition venue) is to quietly suggest that this is not normally considered a Safe Practice, and offer to work with them in the Safety Area to practice safer gun-handling techniques.
If they are unwilling to learn, they'll eventually perform some other "Unsafe Act" which is not protected by the rule book. But then, you'll have another heart-stopping moment. Cringe!
Getting back to the image, this breaks at lest three competition safety rules in several disciplines. Which suggests that I have no sense of humor.
When it comes to range safety, I have no sense of humor.