Yes, best interpretation yet. This data is whack. I would take it all with a massive planet size grain of rice.
And the implication is the 'quality' of engineers at the companies is actually reversed - the top performers at Dropbox are struggling and leaving while the under performers at FANG are struggling and leaving.
Interesting interpretation :)
But where would the best go ? where the worst engineers are ? to appear even smarter ? or just a bit below ? to avoid toxic workplace.