I actually worked on VSCode (Python support specifically) at Microsoft in the past, and seeing this kind of thing frustrates me to no end.

The worst part is all the VSCode is still promoted to developers as open source, even though official extensions increasingly aren't, with bits and pieces gradually replaced with closed code. It's not that closed source is necessarily bad, but when F/OSS popularity is milked for marketing purposes while stuff like this happens, it just feels very wrong. If you want to be closed source for reasons, fine, but be honest and upfront about it.

There's a special place in hell for orgs that do this. Google has been doing the same thing with Android.

IIRC Apple at least has always been fairly clear and consistent with what bits of its software are open and what bits aren't. To my knowledge they haven't been breaking off chunks of Darwin and closing them. (Although if I'm wrong do correct me.)