Nope.
While most believers and non-believers are conditioned to believe science, religion, psychology, and philosophy are the only tools and disciplines we have to guide us in the pursuit of the question of God's existence, they are really curtains that obscure the object of discourse. In this vein, agnosticism ignores the fact that nearly all the world's religions have mystical traditions that posit there is a mystery that underlies life and confounds the ego-mind, which sees only the ripples playing on the surface in the form of ideas and not the cause. An eye, the mystics tell us, cannot see itself: the eye, the source of our vision, is heard, known or felt by the seeing, not the seen. Seeking God, we fail because He is not found or discovered through intellection. Rather, He am only realized in oneness, unity, and wholeness.
Agnosticism is simply a way of saying there is insufficient reason to observe: agnostics see but do not see the seeing.
There is nothing new or mysterious about all this. I'm merely pointing to things that have been known for thousands of years and in many disguises. We all see through a glass darkly, but for some, the glass is so opaque as be uninteresting. Once an interest is acquired, however, the ego-mind will pound away until, feeling frustrated and somewhat distrustful, it gives up in its struggle to conceptualize the structure that underlies all of existence. Sometimes it walks away, sometimes it discovers suddenly and quite by accident that the door opens in the other direction. Sometimes, instead pounding and pushing at the door, it tries another tactic: it slowly and cautiously pulls, opening the door from within.