There is someone who even had about 4 accounts in the high quality Chipmixer signature campaign, and they did post quite well for years until they got exposed. Remember, the campaign required a maximum of about 50 posts per week!
After posting I thought about it, that the CM paid for a maximum of 50 posts. But it wasn't 4 accounts,
it was 3, and the third one didn't usually complete the 50 posts, which would be the equivalent of managing 5 accounts now at 25 posts per account. What I do think is that there may be many that are not controlled by the same person but by farms, like the one in the
famous photo.
It would be even better if you had more data, say IP addresses, considering that most of these "geniuses" probably use the same IP addresses for all their accounts.
As far as I remember only theymos and Cyrus have access to IPs, and I would be very surprised if they would share that information with anyone unless it comes from a legal requirement, let alone in a massive way like this. And in the EU they would be breaking the data protection regulation, I don't know how it would be in the USA, where the forum is legally based, where I guess they would be more permissive.