Absolutely insane to me that you'd pay $35k for a car, and then pay a subscription for basics like cruise control and phone connectivity. The free market free marketing again. Legislate against this now.

I think this can be resolved with code review (as others have mentioned), but there's also a lack of understanding on how to use the components you have created. Maybe a quick email politely explaining the theory/approach behind these base classes, with some examples of do-s and don't-s could work alongside code review to enforce the change