Yup. I switched to Flask mostly because I always ended up ripping Django apart:

- Jinja instead of Django templates.

- Custom (and sane) class-based views instead of Django's disgusting defaults.

- Custom class-based settings.

- There's no way to define app-only middleware in Django. Flask blueprints make it trivial.

However, 10 years later and no framework has come close to Django's true strength: built-in admin.