There are several arguments in favor of the idea that an object can be art even if the person making it did not intend for it to be art. One argument is that art is not simply about creating something beautiful or aesthetically pleasing. It can also be about expressing oneself or communicating an idea. In this sense, anything that expresses an idea or communicates a message could be considered art, regardless of the artist's intention.
Another argument in favor of the idea that an object can be art even if the person making it did not intend for it to be art is that the definition of art is constantly changing. What is considered art today may not be considered art tomorrow. This is because our understanding of art is influenced by our culture, our history, and our personal experiences.
Ultimately, the question of whether or not an object can be art if the person making it did not intend for it to be art is a matter of opinion. There is no right or wrong answer.