> The absence of logged events doesn’t mean that data is not being sent though! A more accurate way to see what is being sent out is to monitor your outgoing network traffic and analyze the packets.

But unfortunately the author doesn't do that

A bit further down they say

> It looks like you cannot shut telemetry off 100%. These settings will opt you of most data sharing scenarios; but not all data sharing scenarios

And even VSCodium doesn't take it all out

> Even though we do not pass the telemetry build flags (and go out of our way to cripple the baked-in telemetry), Microsoft will still track usage by default.