That sign of the beast is very close to “I love you” in ASL. Wonder why.
I had read that Helen Keller was fascinated with mystics, so maybe a subconscious or conscious thing is a theory out there.
I’ve seen no other theories, and have no opinion myself. Whatever sign flashed, the meaning is whatever the group involved has assigned to it.
When I was a kid the A-OK sign with the thumb and index finger forming a circle (like Trump often does)meant don’t worry, all is well.
Now there are people claiming that is a sign of 666. Lots of theories and not really a lot of knowledge.