Yes, Drax alleged that the logs turned into pellets were waste. What the journalists could have done is to not follow the truck that was certain to take logs t

Yes, Drax alleged that the logs turned into pellets were waste. What the journalists could have done is to not follow the truck that was certain to take logs to process them into pellets, but instead follow random trucks taking logs from the site and see where they are destined to. If they did it, and then claimed that all trucks from the site went to pellet plant, that would have made this article much more heavy hit. Given that the article does not allege (despite confusing language) that every, or even majority of the logs were turned into pellets, I conclude that it is more likely that they were not.