Do you mean that the experience is meant to have more structure if you pick the intermediate or advanced level? (fwiw I did pick intermediate for my Swedish level in the app).
My thinking is - I can have unstructured conversations with Advanced Voice Mode or in real life here in Sweden. What I'd really appreciate is a guided learning experience taking me up from intermediate/slightly above intermediate to fluent in the most efficient possible way (as opposed to just having us 'ramble' about random topics of my own choosing).
There is a structured curriculum that gets generated after the intro lesson (if you responded yes to the curriculum question).
This is available for all proficiencies. It's just much harder to talk for hours in a new language as a beginner. It's usable but requires more effort.