No, the average user does not care about the fundamentals of a product or service, as they are not typically involved in the building or investing process. However, the average user will still be affected by the fundamentals of a product or service, as the quality of the product or service is directly related to the fundamentals that go into it. If the fundamentals are not up to par, the product or service will suffer, and the user will be adversely affected. Therefore, although the average user may not be aware of the fundamentals of a product or service, they will still be aware of its quality and how it affects their experience.