This whole thing is a non-issue, not sure why Drew is overreacting to this extent.

FOSDEM is a not-for-profit org. They run on sponsorships and donations. Many sponsors are what we would consider to be part of Big Evil Tech. The last year I was at the FOSDEM beer event, Google sponsored many rounds of beer, in addition to helping pay for the conference. All the money that goes into FOSDEM is invested in subsequent editions.

FOSDEM org gets money from the sponsored talk, but no one is required to attend it. If you don't like Dorsey or his talk, you don't have to attend it. Or better yet, you can attend it and ask critical questions.