if you care about this game you should stop donating even if it's just 2$ or whatever. if enough people do this there might be change, for example DC might actually hire a project manager, employ a full time coder or at least he might pretend to actually work on stream instead of doodling for 2 hours or wasting 30 minutes talking to his team about where exactly to put a chair inside the bar and things like that. if progress continues at this pace the tech update is still not going to be out by the same time next year
I know this is difficult to process - but there are enough players of the game, both subscribers and non, who aren't as bothered by the pace as some of the more vocal individuals who are bothered. Personally - as a nonsubscriber - it doesn't bother me if this takes 2 months or 20 years.
If it bothers a person that it is taking this long of time and they are a subscriber, we have all advocated that they should stop donating. If it doesn't bother them and they wish to keep donating, that is their choice. They might get enjoyment out of watching the streams live or on VOD, they might see the value in what DC and the team are doing even if it is taking a stretch of time, they might just support DC's vision, they might simply donate as a way of saying thanks, or they might just be donating for no other reason that "meh, seems like a thing to do."
As has been mentioned time and again, DC left his previous work partially because he did not enjoy working in a traditional game development firm (with project managers, etc) - so the idea that he might hire one to manage him is a non-starter. His doodling on the stream is a public relations activity as well as a way to have interactions with some of the fanbase - it should not be seen as some kind of productivity time that has its primary intent to advance the game content, but as 'facetime' that may result in content. Its like having Wendy's fast-food restaurant founder Dave Thomas in Wendy's commercials - nothing really gets checked off the to-do list, but it does have other advantages.
Also, as has been stated over and over and over - to others and in replies to you - DC has made it publicly known that while the monetary support is nice, it's not his driving motivation to make the game. His development team will shrink and grow based upon his own enjoyment/frustration with the progress. If he brought in $200,000 per month in donations - he probably wouldn't do much different than he's doing now. If he brought in $200 per month, he would shrink the team to just himself and develop when he has free time - and then updates will REALLY slow down.