I believe the idea for the companion gear being non-craft-able was to encourage more open world exploration and progression. This is sensible, as it creates new paths for those people who appreciate solo play and overland content.

I imagine down the line when this path has been exhausted by a majority of the community, they will implement this option. Though it will likely remain that the 'best' companion gear will need to be looted.

Companions though are certainly meant to be trivial, outside overland content. So I imagine all they care about is that they just work how they are intended, and only adjusted as needed based on bugs or if scalability is found to be flawed.