I don't disagree with your assessment. Religion has plenty of hazards. But it also has this one feature that I believe is supremely important for the creation and maintenance of a culture and civilizational activity. You can remove it, but there will have to be other means that have the same capabilities as I described.

And on top comes the problem, that superstitious individuals will find something else to pray to (with a brain scan you can split religious and non-religious individuals in the sense of "believe" and "don't believe"). This new proto-religion, it could be for example that they create hero stories of sport stars, which will eventually transform into a religion again that has the characteristics of a pagan believe system (=supernatural stuff).

So, the only thing that you can practically do as non-religious person is, that you add some recursive thinking to the recipe and overall make sure, they stay busy with non-worldly stuff. That means, you let the adherents of those pagan gods think about the question what happens after death (and technically also before birth). At the end when they are done - that should be possible when the underlying proto-religious pattern is not too idiotic (well, even the Koran works) - the circle closes and you end up with a full-blown religion again. That again has the features needed to create a stable cultural and social environment.

Bottom line: Destroying a religion gives birth to a new one. And you better stick to the devil you know.