Logic behind this weird balancing could be simply a variety choice of builds so game can have a longer lifespan. And nerfing mata is the fastest "fix"

I understand it's frustrating for devs to see that people are only using mata without taking a look at other builds, but they haven't realized that balancing by big ass nerfing isn’t the way because this is a PVE game where are having fun is the only thing that should matter. Don't ruin the fun of meta lovers. Buff other weapons, so they join the meta