The first agile manifesto people were largely consultants who realized that initial requirements are often bloated and not quite right. Instead it is better to

The first agile manifesto people were largely consultants who realized that initial requirements are often bloated and not quite right. Instead it is better to work with a client to gradually develop their ideas and to work with them for that. The cottage industry came out of that pretty quickly and development process often turned into some manager or PM using the first Google result about SDLC. I somewhat agree overall, but the origin story and the context that the original agile manifesto people were consultants I think is an important context