Isotope Toast asked:
"Do we know he flipped the switch from CVR data? "
There's no data on the CVR, just separate audio recordings from each pilot's headset microphone and from a general microphone in the instrument panel.
The operation of that guarded cockpit-door switch might not produce much sound at all, it may be unlikely to be audible at the co-pilot's headset microphone or at the instrument-panel microphone.
I've not read of the CVR recording including the sound of the door-open request or override audio-alerts. Either the investigators felt this was not sufficiently important to include in their briefing or perhaps the sound was inhibited by prior movement of the switch to the "lock" position.
The FDR records data including (I believe) some switch activation relating to flight controls. But, so far as I know from what I have read, it does not include the operation of the cockpit door lock/unlock switch. The FDR memory unit has not yet been found anyway.
It does look like the article you refer to (and quite a few others) is very poor quality as you say.