Well you have no sources and you can be full of it. But following the scientific method, I’ll try your hypothesis next chance I have! :D
"If you peel a banana, take a bite off the top, and then poke your index finger in to the middle of it, it will split in to perfect thirds".
Upon trying this, I discovered it was not true, and my friend just wanted to see me stick my finger in a banana...
It's still technically possible it's a hoax but, boy, that's a lot of effort to provide fake content to support the hoax.
Nice. Maybe GP got the wrong end, or it is a test of ripeness, or perhaps 'bite off the end' ruined it (it at least didn't seem to be necessary in the linked video).
I'm still going to shake my keys at the next swarm I passby.
All this time I thought this was him being silly!
(For the record, the banana did NOT split nicely)