Behold the ultimate mathematical troll job! This "proof" starts with a clearly false premise and then uses seemingly legit algebra to reach the absurd conclusion that 1 is the largest natural number. It's basically what happens when mathematicians drink coffee at 2 AM and decide to mess with freshmen.
The sneaky flaw? Assuming "n is the largest natural number" when natural numbers are literally infinite. From there, the algebra actually checks out! This is like claiming you're the tallest person alive, then using your height measurements to "prove" nobody can be taller than 5'2".
This is exactly why mathematicians trust nothing and verify everything. Trust issues? Nah, just good practice!