In this day an age of lightweight backpacking, many hikers are turning to alcohol stoves because they are super-lightweight, inexpensive, simple to use, and alcohol can be shipped in bounce boxes along the the trail. Since most commercial backpacking stoves have an integral pot stand, someone who uses an alcohol stove needs to provide one. But the same criteria for choosing the alcohol stove in the first place must also apply to the pot stand-windscreen too.
Most manufactured pot stands and/or windscreens are designed to fit a variety of pots and stoves, making them versatile at the expense of stove efficiency. But most lightweight backpackers use one pot and one stove. Having a stand that elevates the pot to an optimum level above the stove, and a close fitting windscreen that provides adequate air flow while blocking wind and limiting heat loss, reduces cooking time and more importantly, reduces fuel consumption. This translates in less fuel weight to carry.