To put it simply:
We use concepts about "mind" to dissolve concepts on "reality"...
There is no denying experiencing is real.
Because it refers to everything. (Including denials)
As for any other concept (including mind) which is more specific all we can do is related to its usefulness. Its essence is abstract and transcendental.
Grounding the denial of Reality as an absolute in the absolute of a concept of mind is self-refuting and lacks internal consistency.
Bluntly, such process thinking immediately categorizes an inferior reasoning ability from those to which this argument seems appealing.