Chad Raymond Hill who refuses to accept donatoins or sponsorships of any kind.
That being said the people that maintain the filter lists I believe, don't quoute me on this, you can donate to a few of them. Really depends if they mention it on their githubs though and you pretty much have to go about finding them on your own as there's no real centralized list of all the people that contribue to the filter lists.
That's correct. uBlock Plus' Github says he won't accept donations but give instead to the unsung heroes maintaining the lists on which his software depends.
I'm holding out some hope, since twitch is live but YouTube is pre-buffered, but they could still block loading past the ad on a timer or a key computed from hashing the decoded frames of the ad, idk