I don't know if that's true, but meeting in a cheese bunker would mean that you wouldn't have to bring snacks. But there are letters between the distributors of the cheese, DMI, and Pizza Hut that we have to go by at least.
While I do believe that the evil rituals of the illuminati and/or the powerful business families and/or the Clintons and/or the Bushes and/or the Soros' take place somewhere, I doubt it's in the cheese caves. In terms of not getting caught though, it makes perfect sense to perform such rituals in remote bunkers and caves.
Multiple people tried to testify, and they were killed for it. Some of the most famous examples are Chris Cornell of Soundgarden, Chester Bennington of Linkin Park, and Trevor Moore of Whitest Kids U Know.
I don't think so, and neither do a lot of people who looked into the circumstances in which he "committed suicide." To say the least, it's shadier than the first few Eminem albums.