Check the linked article, the issue is around how information that is technically true but presented in certain ways can influence people. They found that headlines that, for instance, said someone had died after being vaccinated had a significant effect on people’s intention to get vaccinated themselves, despite complications being very rare.

Basically people are easy to influence, and you don’t need to outright lie to do it, just presenting facts in an unbalanced way will do it. Many would call that lieing too, but it’s by omission rather than by fabrication.