Django: Building a Data model

In Django part 1 : Building a data model on lec 4 - Organising models in apps

We discuss about how we will structure the project.
The tags app isnt necessarily needed in this project, you added it for showing that there is no coupling when we have tags and the store model. Lets say we discard the tags idea for a minute.
We end up with just store app, which forms a monolith structure. How did we overcome this problem? Is there no other way to overcome this if we just have the STORE app?