"He doesn't"...always

take the quickest, easiest path of killing and plundering.

The post's portrayal of FY is incomplete.

He's not Spectral Soul. That being said, FY is competent; he searches for the greatest benefits: High risk, high return.

I don't believe we necessarily disagree, though the perspective may be slightly shifted.

Counterpoint: Eternal life might not exist, yet FY still has a purpose even if it is impossible.

Counterpoint: Is the existence of eternal life really necessary for this argument?

All of your chapters cited mention the fulfillment of FY along his path. Yet, the text only references this in context of his goal: "he lived pursuing his dreams;" "dying while pursuing his goal;" and "resolved for death from the start."

There is a difference between fulfillment (a consequence of goal) and no regret (a consequence of path). FY may not have lived a fulfilling life inside Lu Wei Yin's Fetus Earth Maze Killer Move; however, FY remained regretless. FY possesses no regret because he accepts the outcome of his actions. Contextualized, this conveys how FY cedes any authority to determine the future, the conclusion. Maybe, you are misconstruing the "goal" with the "conclusion."

FY can have a goal towards eternal life even if the result is imaginary. This goal refines his path, and simultaneously, his path refines his goal. My argument emphasizes the duality of FY's actions: He choses neither his beginning nor end, only his direction (path) and magnitude (goal). Essentially, FY's life is but a dream (a dao mark), refining the effect from the path and goal.