Very important reflection. I've also had a hard time describing my area of expertise over the years because I do so many different things and my range of interests is so broad. Recently, I've resorted to calling myself a spiritual worker when someone asks, a sufficiently big umbrella term for most of my activities, but otherwise, I don't generally use titles.
We should indeed be mindful of the information we consume, it feeds into our beliefs and opinions in a feedback loop.
I generally don't use titles too but where I am from it's sort of needed for tax purposes and a lot more societal stuff. Most of the time, I don't really care :D and yeah, information, the things we read, see and hear are pretty powerful, so it's best to be careful while consuming any information.