The biggest problem with the multitude of connectors is what is able to be converted to what. As far as I can tell Teslas can only be converted to J1772 or CHAdEMO. It didn't answer questions like is J1772 better than finding a NEMA plug.
I agree it is a bit confusing. I think the article incorrectly says you can get a CCS adaptor, and I am not aware of a Tesla approved adaptor to CCS.