Isn't Lee Dong-jin watching a different movie than everyone else?

Whether left or right, everyone agrees on the premise that Park Chung-hee orchestrated it, and they fight over whether it's a matter of freedom of expression or filial impiety.
But he is the only one saying that in the movie, he didn't feel at all that Park Chung-hee orchestrated the assassination of Yuk Young-soo.
Isn't he the only one watching a different movie?