• Been working with Django for over 4 years and as a web app become complex, not using “apps directiories” is foolish. That’s my experience
• Avoid using the ORM as the main interface to your data ? Are you serious ? So you want to create your own ORM ? So you choose a complete framework built around or on top of the ORM and then don’t use it?
• Avoid Fat Models! Absolutely. But don’t try to put the additional logic down the line ( views.py, utils.py, admin.py …) when you could have put them in one place : Fat Models.
• PostgreSQL is good for migrations! It is strict and help test migrations into development so that they can be likewise successful onto production.

My general impression is that this article is for small project where the developer do not want Django but Flask.