Not everyone affected is going to post on reddit. There are plenty of tech-iliterate victims who don't even know something is wrong.
If you spin up an exploit pack and can't get 50k hits in a day you're clueless and should consider a career outside of cybercrime.
Unless the reporters have some specific evidence that teamviewer is at fault, it's overwhelmingly likely that many of them were hit by some totally unrelated fraud.
This person formatted the drive a week ago and only had a few things installed. https://www.reddit.com/r/teamviewer/comments/4jr9qn/hacked_t...