No, Materialism does not in fact do away with ideas, what it says is that there is a dialectical relationship between ideas and material reality, between theory and practice. I'm arguing that any theory that hasn't been put into practice does not have much value. Materialism means coming up with an idea, trying it out, seeing the results, integrating that into the theory, and trying again. Continuous dialectical process of improving the theory and testing it is what Materialism actually is.
You've made it abundantly clear that you don't actually understand the subject you're attempting to debate here. Maybe spend some time educating yourself instead of telling other people they're not getting it.