MoS2 doesn't work, that's for sure. They, however, will sell it for as long as someone is willing to buy it.
Oh the stuff works there is no no doubt about that, when I was using it decades ago it really made in difference in engine noise in my Unimog, it was very quiet with the LM MoS2 but the oils of that time were crap. It is the side effect of falling out of suspension and the advent of better soluble moly compounds that made me give up on the stuff.
As far as putting white graphite in the oil, no thanks I will pass.