I have a friend who takes it for lupus, and has taken it for years. Clearly, he hasn't died, in part because it is a prescription drug and requires a doctor's script. He understands the risks and the benefits. He has taken it for years, as I mentioned, so your "people have said" is clearly not inclusive of a large number of people. The medicine is made by several manufacturers, and if there wasn't a market, that wouldn't happen.
I call shenanigans.