Part of dedicating is also habit dependent. If you constantly cycle through tobacco types, dedicating may not matter as you may not ghost a pipe that way. If you tend to smoke the same types for a long period, you are running a higher risk and dedication may be for you. I don't think it is overthinking or even some grand scheme to get us to buy more pipes, I think it depends on your personal preference. I definitely have pipes dedicated to certain types of blends, and I have some pipes that I just smoke when I want to. I have some pipes dedicated to a blend specifically, but that is more to keep the blend and pipe together in my mind, and a good tobacco from only one pipe really can be a nice moment of relaxation.