Nice try and kudos for trying to challenge Buddhism, but what you say is false. I will address your argument below.
Your characterization of Buddhist psychology and ontology is off. I will show you quotes directly from the Buddha explaining how he attained knowledge of Ultimate Reality and the state of consciousness used to attain it.
the Buddha: "This Truth-essence which is discoverable in the enlightenment of all who are enlightened, is realizable as the regulative and sustaining principle of Reality, which forever abides. The Transcendental Intelligence attained intuitively by the Tathagatas by their self-realization of Noble Wisdom, is a realization of their own self-nature, -- in this sense the Tathagatas are permanent. The eternal-unthinkable of the Tathagatas is the "suchness" of noble Wisdom realized within themselves. It is both eternal and beyond thought. It conforms to the idea of a cause and yet is beyond existence and non-existence. Because it is the exalted state of Noble-Wisdom, it has its own character. Because it is the cause of highest Reality, it is its own causation. Its eternality is not derived from reasonings based on external notions of being and non-being, nor of eternality nor non-eternality. Being classed under the same head as space, cessation, Nirvana, it is eternal. Because it has nothing to do with existence and nonexistence, it is no Creator; because it has nothing to do with creation, nor with being and non-being, but is only revealed in the exalted state of noble Wisdom, it is truly eternal."
[Lankavatara Sutra]
the Buddha: "Transcendental Intelligence rises when the intellectual-mind reaches its limit and, if things are to be realized in their true and essence nature, its processes of mentation, which are based on particularized ideas, discriminations and judgements, must be transcended by an appeal to some higher faculty of cognition."
[Lankavatara Sutra]
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