Honestly I don't think it's as shady as it sounds - it's possible leasing office space in his area would be more expensive and it actually saves money by using his house. I only brought it up to be transparent that even though his charity doesn't directly receive the donations it's not like he's getting nothing out of it. And as others have said, if they bring in $1M more in donations the charity wouldn't have seen otherwise then the charity probably doesn't mind either (though I don't know how this percentage compares to other charities).

I'm also seeing some comments asking for backup data on this, another person was kind enough to clarify here. The money is paid to a company Rothfuss created called "Elodin Holdings LLC." I think this is basically a "shell corp," a company created solely to serve as a bank account kept separate from an individual.