It's not what you believe, it's not a question of AGI, it's what the managers and investors think will happen. It's about headcount and it's about the average dev. Sure, now you have one smart guy in the loop and 99 guys not affording their rents anymore.
You ignore the impact "anyone can do it" in the mind of a manager/CEO. It demotes the specialist dev to generic labourer, it devalues their worth.
Tech people need to develop a theory of mind and understand other people have very different views of reality and so make very different plans for the future. It doesn't matter you and Simon think AGI is not happening, it doesn't matter you both think there must always be a meatbag in the loop, what matters is what the managerial class and the guys with capital _think_ it's happening.