I stopped reading closely about halfway though and skimmed the rest. The author seems to be “just asking questions” rather than actually doing much investigation. It’s not new or surprising, for example, that Google’s search deal is the bulk of Mozilla’s revenue or that a non-profit can own a for-profit subsidiary. That’s about where my attention waned, but it seems the author’s main beef has more to do with payments to liberal-sounding organizations than any sincere concern about financial shenanigans.