It's a method I saw advocated by Ed Rosenthal formerly of high times who ran the running article ask Ed.
https://www.edrosenthal.com/the-guru-of-ganja-blog/how-to-start-cannabis-seeds-right
He advocates it is a sterilizing soln which I tend to think H2O2 would indeed do
Others also advocate it as a first step in germinating older seeds with possibly harder outer shells as they say it will soften the shell allowing hydration.
Cannabis growers often save seeds for a long time in order to preserve the original genetic of a particular strain that has worked well for them. If properly stored, a...
www.dinafem.org
For me at least back b4 you could pop on the internet let alone what might have been available and correct high times and ask Ed was a great resource. Not saying he's always right lol