I suppose that's true, but yeah, Archguns are criminally underpowered comparatively to most meta level ground guns. I do see the benefit in having infinite ammo for them, though one could easily play Protea and achieve the same results, and do so without being restricted to Open Worlds.
Like I mentioned in the post, I understand that some people might find them fun, and in some regards, I also enjoy strutting about in a walking tank that makes *way cooler noises than it should be making*, but this justification is moot, as fun is subjective between most people, and some people,