Yes that is really a good thing about Linux, we can see or check whats in my system, there is nothing locked.The way I understand it is that Linux and programs are all opensource. That means you can change things, personalize it. From what I've read, only a few are developing proprietary soft ware. The rest of them are something they wrote to meet their own personal needs. They share the code so others can build on what they wrote and personalize it for themselves. I think of it as a template.
Also, there is A LOT in the repository. Many programs have the same end goal in mind. Keep looking around for something that you like. I am far from versed in code, bit I've never had problems disabling things I don't like.