Retrophin was a company and not a drug, right? The comment is saying things like "Retrophin isn't a widely used drug" which is really confusing me and makes me think either I or the writer (or both) don't have any idea what he's talking about. I'm trying to make sense of it compared to what I'm reading from other sources and am completely failing because of this.

The drug was called Daraprim. I think the linked comment misspoke when calling it Retrophin, but I have heard many of the same things that they are saying. Namely that anyone that cannot get the drug through insurance can get it for free. I don't think that Martin Shkreli is a good guy by any means, but portraying him as "human garbage" is not entirely fair.