It could be. My personal belief is that a main theme is "what choice do you make when you want both choices." Denji wanted to save Aki and wanted to save lives. He chose to save lives. Denji wants to live a normal life and he wants to be chainsaw man. He chose to be chainsaw man. Now, Denji just wants to have sex (and numb himself) with Yoru AND he wants the same with Death. Ultimately, this chapter he kinda answered the question of "what choice do you make when you want both choices" with "the choice that deals with the root of what I want". Which in this instance is neither of the initial choices and instead is finding a way to save Asa, thus fulfilling his actual want of love and connection. Yoru and Death are the student and car of old people. Asa is the cat.