In fact I do. There have been multiple substantiated articles on how the Overwatch ELO system works. Just Google it (a great one is on towardsdatascience). Or use the forums:
Your claim that we know nothing about how the ELO system in Overwatch works is nonsense.
But here we run into the issues with Subjectivist reasoning. How do we know they didn’t change it since the time the articles were posted? How do we know they didn’t change it yesterday? How do we know the authors are not lying? Alas, we know nothing.
Edit: I have removed my last paragraph. In hindsight it was a tad wrong. Sorry if you were already typing a reply to it.