HI and welcome,
Medium is a blog site and i make a point of not reading that type of site for MS related research information but whilst i've not read that specific one, i did refresh my mind of this concept...
This isn't new from my understanding this goes back to the 1980"s and there are a lot of assumptions made that still haven't been proven.
https://pubmed.ncbi.nlm.nih.gov/7543986/
What is it specifically you want to know or are you just passing something on?
Cheers......JJ