I hear this occasionally and I'm getting kind of tired of it.
Huxley coined the term agnostic to describe a reasonable philosophy: In matters of the intellect, follow your reason as far as it will take you, without regard to any other consideration, and do not pretend that conclusions are certain which are not demonstrated or demonstrable.
Admitting that you cannot know if God exists or not seems like a pretty rational stance, yet it's sometimes maligned as cowardice by ideological edgelords.
Even if someone happens to be hiding under the tent of agnosticism out of religious apathy or conflict avoidance, it doesn't mean agnosticism is inherently cowardly.