Little to nothing of what you're describing is related to ms. Any provider is legally obliged by DMCA and other providers do so when served with a notice. The discussions were taken down by the maintainers because the infected tar were being posted there.

As for the controlling infrastructure, once again that's on us for coalescing onto a single platform. The tool itself allows for distribution by its nature, but we as a mass of technologists are choosing to gather there. This happens no matter the platform owner, and you'll see it in other themes too.