For software within a certain complexity scope, this is true. Like the average SaaS CRUD experience that many web developers were building before AI - a lot of that can be handled almost entirely by agents, with very little human in the loop activity. But past a certain point of scale/complexity, this breaks down rapidly. In the past 8 months I've seen this occur several times, and if you only rely on agents to get you to that point, then you're in a heap of trouble when you do reach it, because it's very hard to backtrack.