> I was incredulous when I couldn’t find a developer-friendly implementation of Murmur3 in C# already.
I've got Murmur3 for you [1] - you can stream into it if that interests you at all. Here's my unit tests [2] (which are arguably the hard part because the reference tests are strange).
I agree with your article, though, a lot needs to be done. E.g. Frustrated with the lack of a .Net diffing lib I went and wrote one based on patience diff [3] and the best I've gotten is one issue. Nobody seems interested in solving problems like the ones you are talking about.