Scrum, Agile etc. is a nonsense which should be ended. The one reason why it is so popular is that it provides managers with opportunity to organize meetings - stand ups, planning, retrospectives,... Why in the world would anyone reach out to other people to figure out what to do in the next 24 hours? The development of even a minor feature takes longer than that, and contrary to Agile principles cannot be arbitrarily split into smaller parts.