While it may be typical of creatives that doesn't preclude it from being an unprofessional practice and more importantly one that will stall out success. Purpose and passion are great, they are ineffective without a solid plan, a clear business model, and strong strategies. That being said, their plan may not look "typical," that's fine as long as it creates focus and structure around their big vision and big goals. A plan creates milestone and metrics for achievement so you know you are moving forward and where you need to improve.