I argue elsewhere that the agnostic impulse is based on a scientistic aversion to philosophy.

And there are degrees of understanding. Atheists needn't say we'll ever understand anything fully, let alone the whole universe. That doesn't mean all negative judgments derive from arrogance.

https://medium.com/interfaith-now/thomas-huxleys-scientism-and-the-agnostic-s-false-modesty-20862b2be550?sk=96ffb743628853c05ab4cb31bee30534