Why credit? Come on, the world has moved on from 1990s-era 4-clause BSD licenses. If you recall, the 4-clause BSD license states that all advertising materials must display an acknowledgement. It’s widely considered to be a mistake and nobody uses this license any more. Not because of legal reasons (incompatibility with GPL) but because it is madness to require so many acknowledgements. Stallman was right.
Yes, madness. VS Code wasn’t developed entirely by Microsoft. It uses plenty of other open source libraries. Why is it that VS Code should be acknowledged but not the underlying V8 engine, or Chromium, or WebKit or KHTML?
Stallman said that in 1997 there were 75 acknowledgements in a single piece of software. With today’s trend of micro libraries on npm, there will be at least thousands of acknowledgements in one piece of software.