I do like the idea of streamlining donations to open source projects directly through a package manager, and crypto seems like a good fit for that (decentralized, uncensorable). The issue here seems similar to knowing what charities are properly using funds; making a system to make decisions about how to spend money is hard when there's so many people looking to misdirect it to themselves, and the point of this would be to relieve the people who would be donating the money from putting effort into doing the research themselves, so that big problem has to be solved.