The article isn't referring to a specific product, as far as I can tell. If I do a search on "sporebiotics" I find something called "MegaSporeBiotics", which looks like it might be a bit difficult to obtain (practitioner brand).
Now, that all said, I've actually been taking something like this for the past 17 years -- I've taken "Primal Defense" by Garden of Life mostly, but also "Body Biotics" and "Royal Flora". All of these contain bacillus subtlis, and mostly known as "Soil Based Organisms". I would agree that they've been very helpful, yet I'm not sure that they've cured anything, as I still take them today.
I haven't tried Mega Sporebiotics, but it's certainly something I'll probably try...
It was the only probiotic that had long-term results, others were all temporary few days effect.
I've used it to get rid of colds faster, get rid of huge upset stomach while travelling, and to digest food a lot better overall.
I am also guessing that a compromised gut will lead to ES, because my very first problem ever was problems with digestion. I knew it would have a domino effect, but everything I tried could not repair it, until I found this probiotic and a betaine HCL, and with those two, plus avoiding EMF I brought my digestion back on track. My digestion is better now than in the last 10-15 years!
Actually, on further research, I see that I've already taken this controversial strain (b. licheniformis) for years at a time, as it was/is a strain in "Body Biotics" (formerly "Natures Biotics"), and it also used to be in "Primal Defense" (but was removed about 5 years ago). I can't say that I noticed anything terrible about those products, and the Primal Defense actually seemed quite helpful, although I could never say for sure what ingredient(s) made it helpful.
After reading that article, I ordered a bottle of MegaSporeBiotic, also "GutPro" from Organic 3 (as that blogger seemed to think that was the best probiotic on the market, and I haven't tried that one)