No, un-belief isn’t based on faith. It’s just a lack of belief. Babies are atheists, until people fill their heads with tales. We are all born atheists.
I would hardly model my intellectual development on an infant. We are all born ignorant of EVERYTHING, until we learn better. An infant has no more capacity to understand the nature of the universe than an ant has to comprehend nuclear physics.
I had to learn to believe in a Higher Being. I saw the infinite complexity around me and I knew it couldn't have happened by chance. And for me, with my pathetically limited knowledge, to pretend that I could deny or confirm the greatest "Why" of eternity was nothing more than hubris. So I fell back on Faith, and it is to Faith that I cling.
If you want to talk about "tales," let's talk about ridiculous assertions like the universe ex nihilo or abiogenetic life ... all the convolutions atheists have to embrace to avoid admitting that some Divine engine moves the stars.