I have a linguist friend of mine who proposes that one should abandon all labels and paradigms to reach the ultimate truth, as they are deceptive. He proposes that you should strip all intellectual tools like math, science, logic, statistics and language and "experience the truth" first-hand, without anything in between. He calls this "direct experience" a term loosely based on the original in philosophy of mind.
When you come with a counter argument like "this too is a logical process and therefore you are victim of circular reasoning/slippery slope" he rejects it by saying "in that stage..." (where there exists no labels) "...there is no importance of logic as it is a creation of your current deceived mind" as if it (the direct experience) is above all else.
My view on this as a person with background in biology and neuroscience, is that even if you strip away all labels AND your cognitive instruments (sensory organs, your brain, etc) there is a certain "experiencer" entity left, and being a part of reality itself, it is still subject to bias. The idea that there is a "direct experience" without all paradigms itself is a paradigm, but he simply rejects this by claiming even using terms like "contradiction" itself deviates you from his idea.
I still find this a slippery slope argument and at best, a belief. However, he claims that I still go further from the "truth" by just making up a term "belief".
I want to see this community's possible counter arguments from a philosophical perspective. However, my main focus is to understand how can you eliminate this kind of illogical and deceptive reasoning? Is there any reasoning here at all?