He was saying that Vader wasn’t actively fighting when he threw the objects at luke, and he’s correct. Vader was either simply holding his saber down, or was holding a block.
A saber lock is still fighting as both people are trying to gain leverage. They’re still technically fighting.
I get that, I was just saying that the facts he stated about Vader’s movements were true.
I was actually referring to the saber lock but he was right about the part in which Vader lowered his blade when he hurled another object at Luke.