To expand on this further, most (i.e. not all) of the reddit reports are meaningless as on any given day there's going to be tens of thousands of examples of this kind of fraud.
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.
Well it's related to Teamviewer for sure, because it shows up in the people's Teamviewer connection logs. Yeah it could be other malware that is stealing the Teamviewer credentials from their computer. But that seems like more work than necessary, because only a few percent of people have teamviewer installed and running, and they could attack everyone by having them malware install their own remote access service.
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.