Decorating your ignorance as simplicity might be pleasant in the inside for a brief period of time, but it’s still portraying an ugly image.
That can benefit you as it allows you to focus on one thing, but compared to the potential benefit, it doesn’t even come close.
In some stages in your life, you will want to go heavily on one area, minimizing the hassle of others. This definitely seems like the right decision. In fact, you can even go as far as to say that some voice is you to do that. But humans are such creatures that are prone to neglect what matters. Only after you live with the consequence do you understand that life is never that simple.
Being able to simplify is knowledge, oversimplifying is ignorance.