I have spent the past ~7 years helping build the open source OmniSharp, a C# language server, until I retired from the project earlier this year.
For years it provided the backbone for C# experience in Visual Studio Code and other editors and was used by millions of developers. Despite all of its problems, it has to be remembered that it was built in free time by a small group of passionate folks, and building a language experience and providing constant support in this quickly changing landscape is not technically trivial and emotionally very burdening.
