Materialism wrongly fixates mundane purposes, and denies higher ones. Both aspects cause unnecessary trouble.
This page explains how three other confused stances, eternalism, mission, and nihilism reject materialism. These rejections are each partly right, and obviously so. Unless you are stubbornly committed to materialism, you will admit this, if perhaps sometimes reluctantly. That makes these considerations obstacles to maintaining the stance, destabilizing it.
Each critique is flawed; partly wrong, although not entirely mistaken. These flaws are also obvious, which is a reason it’s possible to adopt materialism at times.
Meaningness rejects materialism from point of view of the complete stance. It regards all purposes, mundane and higher, as both nebulously meaningful and nebulously meaningless. The next page explains that critique.