Apparently Roberts wanted some kind of precedent weakening the reach of the commerce clause so he "traded" support for the individual mandate in exchange for getting the liberals to say it was a tax not a fee and striking down the mandatory medicare expansion.
I guess the only good news is the individual mandate was repealed anyway in the Tax Bill last year, so it's gone anyway, if six years late.
It is actually surprising to me what was revealed in this article, and I am quite cynical.
Now bow down and be "thankful".