An update on the green thread experiment for .NET

The Twitter post linked list links to this Github issue, which has the actual discussion: <a href="https:&#x2F;&#x2F;github.com&#x2F;dotnet&#x2F;runtimelab&#x2F;issues&#x2F;2398">https:&#x2F;&#x2F;github.com&#x2F;dotnet&#x2F;runtimelab&#x2F;issues&#x2F;2398</a>. Could we get the link changed to point there?

Since &#x27;green threads&#x27; are never satisfactorily explained in the link:<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Green_thread" rel="nofollow noreferrer">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Green_thread</a>

Very naive question, what&#x27;s the reason platform threads can&#x27;t be made as efficient as green threads? Is there a fundamental limitation here?