So we talk the Installer, the brand/icon (which is good that it is strictly owned by one entity) and literally settings. These do not make the product less open source (I do not dare to use the term free). Linux is free software, however RedHat is not. You can do everything with the OSS version you can with the VS Code.
However, there are extensions delivered in the Brand VS Code (Remote Server SSH/Docker/WSL) which are closed source (which compete against Eclipse Che). And that makes since a bit muddy.
However, there are extensions delivered in the Brand VS Code (Remote Server SSH/Docker/WSL) which are closed source (which compete against Eclipse Che). And that makes since a bit muddy.