Trends and plot

It's probably obvious by season 9, but Rick and Morty isn't a story about specific characters, but about trends.

And the main idea is that "Same input will always produce the same result."

Like the equation 2 + 3 + 5 = 10.

No matter how you swap a 2 with a 5, or a 3 with a 5, the result will always be 10.

You can even calculate this equation an infinite number of times, but the result is the same.

And so, the Central Finite Curve is an equation where

Rick, the smartest person, + his traumas + his abuse + his influence on Morty = Morty loses patience and becomes "evil."

No options, no alternatives.

It was never a question of "if" Morty would become evil, only "when."

And the last episode is just further proof of this.