Remember guys, the concept of limiter is that it is placed on you to protect your mental and physical body. Only when you turn monster would you break that limiter but by turning into monster you gave yourself to your own desire and petty assumptions/ accusations / belief against the world. Saitama who broke his limiter without being influenced by his desires is a clear example that he is a step above every monster.
Garou still desires power and delude himself with his justice. Even though his idea is good and true, it does not mean it is not his extreme belief that gave him his power. Saitama doesn’t have this extreme belief, even though people deny his story/ his belief he care less about it. That means he is already enlightened.