Ah ok, well great to hear! That is reassuring to know Strapi can replace Django as a backend, which was exactly what I was hoping for :).
I originally had all of my business logic in the controllers of Strapi actually, but I decided to extract that logic out into a flask app to have better separation of concerns for code maintainability purposes. So from Strapi I just have small controllers now that simply return data queried from the database, and then in Python I can process that data however I want and send that data to the front end. I much prefer Python over JavaScript when it comes to coding algorithms (and possibly data analysis in the future) which is another reason I decided to split it up like that.