I’ve used it in soil before when I had root issues.H2O2 will react to anything organic in your soil and it will kill off microbes so if you're growing organic it will be counterproductive.
You're using bokashi which requires microbes in the mix, so know your risk. I know Bill uses bokashi so if he's using the peroxide together with it I'd follow his lead, but it depends on your grow style.
I won’t put it in my coco Thanks Azi.
But you can recharge microbial life after.
Which is good to do regardless.
My laying method solved my problem and I haven’t done it since.
Stay safe
Bill284