Everyone who had seen the stuff going on but didn't blow the whistle.
I understand the people who did the deed - according to the description "A team headed by Whisper's editor-in-chief, Neetzan Zimmerman" - they had some rather obvious profit motivation. I understand the people at The Guardian - they simply did the right thing. But everybody else at Whisper and their guests and passersby who had seen this happen - you suck. If you see your employer do slimy stuff, and put your "loyalty" as a reason to let it be, then you're as slimy and deserve to be associated with the slime and blamed for it, and I hope they're paying an appropriate price for selling your conscience.
If you see your acquaintance (or a company you're visiting or investing in) doing bad stuff, and simply do nothing, then that's not calling being a passive bystander - it's called being an accomplice, and you deserve to be treated as co-guilty.