One of my favourite memories from last year was getting an 'earth sauna' as part of the final soil, woodchip, oats Indigenous Micro Organisms (IMO) ferment of a korean natural farming intensive. Yup buried in hot clean compost pile 🤣

I haven't followed up on bacteriophage benefits, can ye point me to papers in the area? Of course I know of them and their early deployment in microbiology but plasmids ended up easier to manipulate, once you can get them in the cell.

But understanding the benefits of soil microbes has a solid scientific standing, the healing power of working with good earth, the immune building power of Farmacology as I have posted before. Now one microbe is getting alot of press; mycobacterium vaccae, to the point they are apparently are making a vaccine of it (🤬)
General intro article here
https://blog.nwf.org/2011/03/its-in-the-dirt-bacteria-in-soil-may-make-us-happier-smarter/