A warning for people who, like me, long ago disabled telemetry in Visual Studio Code: Microsoft introduced a new setting that deprecates the two older settings... and the new setting defaults to "all"[1]. I just noticed this now after double-checking my settings. Sneaky, sneaky, Microsoft (but still totally expected).

[1] https://imgur.com/a/RbrsuyA

You will want these three settings in your default settings JSON (the first two just to be safe):

    {
      "telemetry.enableTelemetry": false,
      "telemetry.enableCrashReporter": false,
      "telemetry.telemetryLevel": "off"
    }