Islam is pro-capitalist?

Islam does allow an individual to make as much $ as he can yes but I wouldn't call it capitalist esp. since it rejects usury/interests and things like natural resources are supposed to be STATE owned (based on hadith) if Islam is anything economically its socialist.
Islam pre-dates capitalism. I don't think it makes sense to discuss it in terms of socialism/capitalism, which are both modern ideas. Like many systems both pre-dating and post-dating these ideas, it contains both collective/statist and individualistic economic components.
The defining quality of modern socialist thought is workers having control over the means of production-- since Islam doesn't mention such a thing it cannot be socialist as we would think of socialism post-Marx. Collectivist or statist does not necessarily mean socialist.
Similarly, as Islam does not contain a specific ideology about open markets or a specific methodology about conglomeration of capital, it is not capitalist. It
may be accurate to say that Islam is anti-capitalist due to rules on finance and collective ownership of natural resources (though I wouldn't go that far), but even then, again, it is not socialist-- only anti-capitalist in the sense that it advocates a primitive semi-feudal trade system developed prior to modern capitalism.
But you are right to say DH's statement that Islam is "pro-capitalist" is fundamentally unsound.
I think your reading of history is slightly off. In reality didn't care what religion Afghanistan was, they were going to fund a resistance in any case. They were afraid that the Russians were going to break out of the encirclment, and possibly move towards the oil fields of Iran. Religion was just a helpful tool to bring in funding and organization to the resistance.
Exactly. That and there was a broader plan to spark jihad within the USSR's borders, and that forcing the USSR to fight rearguard actions in Central Asia and Eastern Europe (specifically Solidarnosc in Poland) was designed to weaken the Soviet Union's economy-- little did the architects of this strategy realize just how effective it would be.
But in any case, yeah, the "Afghan Trap" had nothing to do with ideology of the pro-religion US versus the godless Soviets-- it was just a means to an end as you say. Also it started under Carter, not Reagan.