It was strange seeing how many people with genuine intentions of advancing AI for good were blindly threatening to join MSFT, a company with much less genuine reputation. I think OpenAI's board is even more controversial than ever now.
The word Microsoft used to be borderline toxic.
Its thesis is that VSCode is meant to leverage open source and popularity to increase closed source vendor lock-in to Microsoft. It cites recent examples of VSCode extensions being closed source, so that while VSCode seems open, the critical portions are not. It's worth reading the full article.