It’s rather inevitable that at least one media outlet would have screwed up a bit of the tyrannosaurs scavenging story. Inevitably some thought that ‘one tyrannosaur scavenged once’ meant ‘all tyrannosaurs were exclusively scavengers’. Despite this not appearing in the paper, or the coverage that it was lifted from. Indeed, both being quite explicit that this was not the case.
However, while I can hardly expect them to have read it, I did write this post pretty recently: a guide for journalists reporting on dinosaur stories. Which not incidentally includes the section:
Don’t assume that evidence for X is also evidence against Y
The new paper might show that say, Tyrannosaurus was a good predator, but this does not mean that it was not a scavenger. Biological systems are complex and few things operate in one way alone. Unless the researchers have done the work to test that the other possibilities are false, don’t assume that evidence for X rules out the other possibilities. We can hold things with our hands, but we also signal with them, and use them to make tools, and to help us feed, and climb etc.