Only an agnostic who accepts whatever evidence you are alluding to.
There is no reason why an agnostic cannot say he has no proof of whether or not the Judeo-Christian-style God exists or not.
He may be foolish in saying that, or not.
But if he sees no compelling evidence (whether that lack of perception is evidence of stupidity or, possibly, exceptional insight), then he can truly call himself an agnostic on the question of whether a Judeo-Christian God exists.
I think you are making a qualifying error in this response.
You seem to think that being agnostic is to say "i don't know one way or another" and so leave it at that. Again, the mistake is that being agnostic does NOT mean "undecided"
Apparently a lot of folks make the same assumption... as 'agnostic' is one of the most commonly misused and misunderstood words around.
Its
not about religion.
Agnosticism goes far further than mere issues of religion. It is not, as is atheism, a position on God... it is a position on the concept of "knowing" , and it applies to every aspect of human interaction with the outside world.
Here's what people don't get about agnosticism. Its default state is DISBELIEF. It is, in fact, the position that 'belief' itself is not acceptable... that knowledge must be based upon evidence.
Therefore, when asked about a judeo christian god, a true agnostic would respond, "I do not believe in the judeo christian god." Why? because there is no evidence in support of it.
When asked about atheism they would reply, " I do not believe in atheism".
Why? Because there is no evidence about that either.
In short, agnosticism, as it applies to God, is that ANY statement about God, is founded on ZERO evidence and is therefore simply unreasonable. God's existence or absence is UNKNOWABLE.
However... people DO make statements about God... defining God, describing God....
I can certainly Judge these statements on their own merit as to whether they could possibly be consistent with reality. This is not making statements about God... this is making statements about the statements made about God. ( And this is partly how agnostics prove there is no evidence of God- by proving the statements made about God are impossible and unprovable)
God or no God the one thing we can say about reality is that Logic applies to it.
Lacking real evidence, I can examine statements about God purely from the perspective of whether they are purely conceptual, or whether they can actually exist.
For example... we can talk about the concept of infinity... but infinity can not actually exist. There is a finite volume to space, a finite number of particles in space and a finite number of places those particles can actually be.
Mathematically, I can divide a pound of lead infinitely... but in practice, I do not have infinite time to divide it... and in reality, I can not divide lead infinitely because eventually I will be dividing an individual atom of lead... and then it ceases to be lead.
So infinity, while a useful idea, can not actually exist in reality.
We can conceptualize and discuss things that simply can not actually BE.
Similarly, we can ascribe all kinds of theoretical characteristics to God... such as omnipotence... but that does not mean that such a characteristic can actually exist in reality.
The God described in the bible simply can not exist, as described, and still exercise moral authority.
He can not have the powers attributed... the old question of whether God can create a rock so large he can not lift it is perfect proof of the ridiculousness of omnipotence as a concept. Fun to entertain, but not possible.
This is not to say that God can not exist... just that ALL "knowledge" claimed of God can be proven false.
We
can state that the difference between an imaginary God and a God that would actually exist is that a 'real' God would be limited to those qualities that are actually
possible.
Again... Agnostics take the position that ANY claims as to the real nature of God can be proven false... therefore there is no evidence on which to base ANY belief.
The agnostic's repsonse to ANY claim of knowledge is, "I don't care nor credit what you 'believe'; what can you
demonstrate?"