Which doesn't make them relativists.
Are the judgments of theists who disagree with you planting in thin air or well grounded?Are their judgments well-grounded or planted in thin air?
Atheists values vary, as do theists' values.And what Absolute truth might that be?
Sounds Platonic - and that's a neutral observation.The point here is not belief in God per se, but movement away from the arbitrariness of feelings, sentiments, and cultural milieu. Contemplating the direction that movement inevitably points to an Absolute — the view that there exist such things as abstract objects that do not exist in space or time and yet more real than the material universe.
I see a lot of people who believe in higher, larger, greater things whose feet do not seem to be on the ground, whose values contradict other people in that category and whose morals and beliefs are utterly tied to culture and family.
I see atheists who I have metaphysical disagreements with but who seem like good grounded people in other ways.
Pretty much every atheist I know has moral values and I cannot say they do better or worse than the average theist.
I'm wary of most members of both groups.
And both groups have a lot of internecine fighting. And they always have.