It’s the “ Copy data into extra large capacity micro sdcard” step that gets you caught. Nobody is stopping you from leaving with an SD card or USB stick at Google.
I wish an extra capacity SD card was enough, google books holds (probably) an insane numbers of books
Comments on the source mention dataset sizes ranging between 1.5PB and 200PB
For 200PB one would need 25kg worth of 2TB microSD cards... that would be lots of Rubik's cubes =P
my guess would be the 7PB mark
Importantly, this would work way better on a speedcube than the rubick's brand cubes. Never use the rubick's brand rubicks cubes. I use the Moyu RS3m V5 maglev, and I think that it would work well for hiding uSD cards.