So if you don't look at a piece of visual art directly is it art? Your argument is heavily flawed. The constituents of art are intention and material of which video games have both. Interactivity is a facet of the medium, not the medium itself which contains ideas, challenges and aesthetic representations of things.
This is on MacOS 10.13.2. I'd love to run Firefox but the battery savings and reduced heat from using Safari makes it too hard to pass up in this regard.