It's used with an assembler. A requester chest and inserter pointing towards the assembler and a passive provider chest with inserter getting stuff out of the assembler. This way I can make anything an assembler can make, even when I'm not close.
It does indeed work with the logistics network. I'm doing space exploration now, and the ability to change or create things on other planets saves on a lot of traveling.
Non dairy milk is great. But he's right when oat milk costs 5x or 10x the price of regular milk while having mostly cheap ingredients is a scam.