you are talking about making an object into a computer. imo it is kinda between "case moding and creating" as you said because you are not creating anything, but not modding a case either, but creating a computer case by modding an other object. this is cool and in the end it comes down to personal tastes. if you want a computer to look like something else, its fine, but there are those who want to keep the computer look. and not stealth it into something else. everyone has a different style and approach to modding, hence you see the boxes