[kls]

Given the fact that you have to download both extensions separately and intentionally from the VS Code binary. I would say that VS Code does indeed meet the technical definition and spirit of open source. I don't know a major open source IDE that does not have closed source and/or paid extensions that you can purchase/download. I find this argument kind of strange, neither of these extensions are part of VSCode proper, sure they are nice but to ding the base editor because MS did not hand these out is a bit of a stretch.