When I read it, it seemed like the decisionmaking for the software being under corporate control was their primary issue. VS Code will always be developed in a strategy aligned with Microsoft's interests.
Like for most modern open source. And that is usually a good thing. Even free software are not developed in public but under tight control of a group of persons. Just that we call them maintainers, do not pay them and their interest is usually glory or their own use instead of marketing of a cloud product.
There's a big difference between open source tools led by open source communities or individuals and open source tools led by Big Tech. Often the latter may decline features which are against the interests of the company, even if they're in the interests of all of the users.
While I agree with that you cannot push something against the goals of the company, but I argue there is no difference with most open source. Try get something new into the gnu tools. If you want to add a word count feature into ls. Might be a cool feature but the maintainer
Will say something like "nope" whatever argument you will bring because it violates their core goals.