The thing is, most people use the term art when they shouldnt, and the proper meaning is now pretty much non-exisitant due to wording abuse, like how many other words in our language have developed into other meanings over the years.
Art is a word used in many differernt areas. Difficulty is a strong connection to art, hence the terms like “the art of”, terms such as martial arts is another application of “art”.
I personally believe that the way we have developed, with “graphic design” becoming a commercial, functional item rather than an expresion there are many other terms to correctly discribe the type of imagery produced rather than art, two of which have just been said : “Graphic” and “Design”. “Illustration” is also another term.
The above piece, I would call it more of a design than art. Being able to paint is pretty hard - you’d be surprised how hard it is to make somthing grungy like that, it requires some skill, so therefore painting it /painting would be an art. But since this was probabily produced specificall for sale (i think?) and the fact the it’s made simply as decor /to be visually pleasing I would categorise it as a “design” rather than “art”
Most people see art as superiority, so just as you get big heads over exaggerating their work/ jobs and so on, they call pieces they;ve created art when really it should be called “poo”