I think your argument here speaks to and can be connected with a broader phenomenon that we can recognize even before capitalist relations became dominant. The relationship of religion as the opium of the masses that masks and justifies certain exploitative relations in society while at the same time providing benefit to the oppressed as spiritual respite and allowing them to feel good in spite of their material conditions.
Of course, the problem persists and is even worsened in capitalism along with massive alienation. Today in the West, the place of religion was largely taken by consumerism of various kinds and I think that your analysis of the stim industry fits into that nicely. As you also say, we shouldn’t attack people engaging in this type of consumerism nor should we focus on individual decisions, but should understand the material conditions that create the need and seek to build a better society where such practices cease to be necessary.
Not to mention that the blackshirts and brownshirts of Europe were inspired by the KKK and similar groups in the Southern US.