As far as I can tell, the problem here is to some degree one of conflicting generalisations. The article is trying to explore a different space to the space for which Arc was designed to be used for exploring.
Just like flippers, scuba gear, and a diving mask might be suboptimal for exploring a jungle or the moon, but great for exploring underwater, choosing an appropriate environment for the space you want to explore is something worth thinking about.
Just like flippers, scuba gear, and a diving mask might be suboptimal for exploring a jungle or the moon, but great for exploring underwater, choosing an appropriate environment for the space you want to explore is something worth thinking about.