"AGI" is not well defined however RL is more like Freudian perspective on human mind which has long fell out of favor in psychology. For example, one of the opular classical view assumed that all of our behaviors are driven by ultimate quest of survival and reproduction. But then how do you explain suicides or soldiers going in certain death combats? How do you explain people who never want to have child? How do you explain artist giving up big money Wall Street job for simple life of doing some obscure art? How do you explain people sitting on the beach to just do nothing?

Here are some interesting comment on the topic:

Is Global Reinforcement Learning (RL) a Fantasy?

https://www.lesswrong.com/posts/QEgGp7gaogAQjqgRi/is-global-...