Granted, the hard science is helpful in getting to the next level and achieving a product that's consistent from batch to batch.
That was the part that was eye opening. It's one thing if I'm making something in my kitchen for my use, it's another when you have already achieved regional distribution of a product but clearly have no idea what's actually in it.
I've been trying to find info about the science of fermentation of soy sauce, and I haven't been able to get much info. I suspect we don't really know what's in those cultures either.
From an outsider perspective, they might be indistinguishable, but I would be shocked if the biggest brands have not done their own research.
https://patents.google.com/patent/WO2017153618A1/en
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8348054/
Apparently similar applies to Whiskey:
https://qz.com/907619/the-many-scientific-ways-to-age-whiske...
https://www.pastemagazine.com/drink/whiskey-/rapidly-aging-w...
https://robbreport.com/food-drink/spirits/distilleries-using...
https://homedistiller.org/forum/viewtopic.php?t=66552
SACRILEGE!