Let's say waterfall == large batch size. The actual problem is the large batch size. The larger the batch size, the less time you spend designing, coding and

Let's say waterfall == large batch size. The actual problem is the large batch size. The larger the batch size, the less time you spend designing, coding and delivering, and the more time you spend (mis)managing the batch - what goes in it, changing what goes in it, planning what goes in it, explaining what will go in it, explaining why half of it didn't go in it. All of this invites a certain type of personality who is not incentivized to deliver but to talk about delivering. That is when the horror stories start.