“Our God is a consuming fire. He consumes pride, lust, materialism, and other sin.” Leonard Ravenhill
Well. I think that's an opinion. A hard position. I have of course heard this argument from many, and some even justify it with some kind of scripture. Most of these justifications to this so called sin is done by the opposing view. For example, some atheists justify their view that religions make them go to hell for their materialism, and a Muslim might say its a sin, and a Christian might, etc etc.
But the bottomline, thinking logically, it is absurd. Because some of the Islamic philosophers have deemed that if someones materialism is a sin, it is the Muslims fault really to have not being an exemplar. Thats one view. The second view is that anyone who's materialism is a so called "sin" should think that they have not conveyed the message, and the so called "sinner" has not understood the message.
So the primary Islamic position is that it is impossible to simply make it a sin. Yet, people have had some movements in the past and today, that materialism is a sin. They will probably hold it tomorrow as well.
But also there is another view that "some" materialists are just doing that because they are too attached to pleasures and even though they truth in this theistic view, they will intentionally cover it. Thats a sin.
There is a lot of nuances. My view is with some of the theologians that the scripture does not have that idea that materialism is a sin by nature. This has been my view since such a long time ago. And that's not because I like to associate atheists or materialists or anything of the sort. Its my school of thought, derived from scripture itself. BTW, there are atheists who are not materialists. Many.
Cheers.