1. Great news! VSTs seem to fill an important role in the audio-processing software world, and having them more open must be a good thing.
2. From the things they mention, the SDK seems way larger than I had imagined, but that is normal for (software) things, I guess. "This API also enables the scheduling of tasks on the main thread from any other thread." was not easy to unpack nor see the use of in what was (to me) an audio-generation-centered API.
3. The actual post seems to be somewhat mangled, I see both proper inline links and what looks like naked Markdown links, and also bolded words that also have double asterisks around them. Much confusing.