Doorway is a digital business card service that’s thinking about the future of in-person data sharing. Our clients range from small business to multinational enterprises, as well as social users who use Doorway as a digital business card to exchange personal data. Doorway is entirely app-less and is held in our users' Apple/Google wallets. Doorway is heavily focused on reducing carbon offset and helping our clients further their sustainability initiatives.
Sounds like we are/have been in the same boat. Are you working full time now? If so, was the pivot motivated by your dissatisfaction with the client acquisition process?
That's one of the reasons I recently made a pared-down Django project, to highlight that you don't need to use all of the tools Django offers: https://github.com/rnevius/minimal-django
Flask and Pyramid don't help in that situation either...In fact, I switched from Flask (after years of being an avid Flask proponent) because I ran into too many projects that were a mess due to the lack of constraints / standard ways of doing things. After 5 years of solid Django use, I have yet to run into a situation where Django is too inflexible for a client's needs. No, the Admin isn't for everything (and that's even outlined in the docs); but it's not difficult to roll a custom dashboard (just like you would when using Flask or Pyramid).
[1] https://www.photopea.com/