It is more along the lines of them not being needed. If I am in a arc burn nf, and I have a 300 light fang, and my favorite gun at 300, I will choose fang 10/10 times, simply because of the advantage. I don't want to have to pick a primary because of uncontrollable benefits. I'd rather choose one I like, or that fits the situation. And the problem with being able to infuse any primary with an element is one, RNG, and two the simple fact that we will stop trying to experiment and try new things if we pick a gun and say that's it, I'm done. Of course, you could build up a large armory of elemental primaries, but at that point wouldnt it have just been easier to make kenetic more effective than right now? Elemental primaries were a cool gimmick, but I'd rather let us be as free with our choice as possible.