My first experience with Agile was a housemate describing this amazing new design system that meant he could get right into coding without any tedious planning

My first experience with Agile was a housemate describing this amazing new design system that meant he could get right into coding without any tedious planning and sort everything out later. He created a startup for his pet project, eventually managed to get one customer for his product and then realised his idea was fundementally flawed and would never be commerically viable or even supportable. That is still my impression of Agile - full speed ahead, buzzwords to maximum power and hope for the best.