It can be verified by anyone: Are you what is aware of are you the content of what is aware, can you be both? We either are the whole machinery or simply aware of the whole machine, and it's obvious in deep meditation, deep sleep and verifiable every moment through direct inquiry into one's experience.
The correlation between multiple meanings isn't the causation of Filters at work, no matter how many concepts or words you want to use for "filters" AKA maps of reality, it's simply the nature of language and it's many meanings and speaks to the general terms and lack of complete clarity on the subject. In the end saying it is so because you correlate that doesn't make it so without a why and how to even verify such intricacies, where as I can directly point at language, at the concepts expounded on here and say: lack of clarity, disintegrated concepts as the cause for the many meanings observation.