In a sense all software usage is just a series of tweaks. Otherwise you'd just have a big button to push and it would 'do stuff'. If that 'stuff' just happened to be exactly what you wanted then that would be fantastic. But that isn't reality. Reality is sometimes messy and complex so sometimes you need the ability to tweak things deal with the messy and complex problems from the real world.
Which is why I love my Mac so much. Most of what I need it does without my worrying about. At the same time, I can rip it up and change anything I'd like to if I want, and there are communities to help me get it changed. When I do need a tweak, it rarely takes me long at all.
In a sense all software usage is just a series of tweaks. Otherwise you'd just have a big button to push and it would 'do stuff'. If that 'stuff' just happened to be exactly what you wanted then that would be fantastic. But that isn't reality. Reality is sometimes messy and complex so sometimes you need the ability to tweak things deal with the messy and complex problems from the real world.