As a former believer myself I just think most of this article is simply taking a personal experience and world-view and assigning it as the de-facto atheist "way", which is just silly. If theists weren't capable of seeking knowledge fully then I wouldn't be an atheist now. That is wonderful if becoming an atheist opens up your world in a way that makes you want to live life to the fullest and take responsibility, for me it did the former for sure, but the latter I never had a problem with. Painting all theists and likewise all atheists with the same brush and same intentions and restrictions is pretty silly. Some people upon becoming an atheist might just decide that it gives them the freedom not to give a shit about anything ever and to shit all over everyone they come in contact with. A believer might get the same message out of their world-view. How people choose to conduct themselves has a lot less to do with religion or lack of it than I think most people think. Religion often gives people an excuse for their "bad" behaviour but you're fooling yourself if you don't think atheism could do the same for others.
The biggest thing becoming an atheist did for me was remove guilt, and that took more than becoming an atheist, it took a shift in my entire understanding. It's possible people could end up being there as theists too, it just wasn't possible for me with my particular background.
As for morality, while many atheists are also humanists there is nothing about being an atheist that makes you "moral" (it feels silly even using that as a concrete, rather than abstract idea, especially in relation to atheism).
I guess all I mean to say is that atheism was indeed freeing for me, allowed me to move away from a guilt-centered existence and move on with pursuing happiness in my life in a way that I previously considered selfish, that doesn't mean that is what it does for everyone. It might make some people into unrepentant assholes, and that's just fine too
