You can emulate it in Windows as well. Tbh, I prefer /u/ymgve's script, as you don't expose your private keys to anyone. I've looked at the source and it all seems legit.
During the '13/'14 downturn, there was just constant dumping. Thousands and thousands of coins, over such long months of non-stop dumping. It baffled everyone. Then later when it was revealed that Mt. Gox had been hacked two years earlier and was insolvent, I suddenly realized where all those mystery coins were coming from.
Didn't WizSec's findings reveal that the majority were sold before the 2013 rally though? I'd probably say it was responsible for $2, not for $200.