It’s a question of what you need and want. I have no rgb and no side window in my pc and generally do not care about the color of something if it works and does so how I want it to. I am a practicality centered person. For some people aesthetics are the most important part of anything they do. Those people are willing to sacrifice performance/practicality for something nicer looking. Both approaches are valid, but some companies specialize to cater to one of them. I do not have a noctua fan in my pc, but I plan to put one on my 3d printer to make it even quieter than it already is. It is always a matter of perspective.