Response to Kaprow "Blurring of art and life"

I like the author's opinion about some art exhibit in the gallery cannot count as art.  It's just like the experience I had in Wexner Center several days ago.  Some of these people's work really make nonsense to me, and I think it's just some normal object but in the different context like what the author said, and I really cannot understand why people should admire these things. In my particular opinion, art should not only depend on the people who created, it should depends on people who is enjoying it, because the art in each people's eyes is different. And i also like his opinon about the nonoticed action during our daily life, and almost 90% of out act is not noticed by ourselves. This really make sense to me, because I always feel like this.
There's no specific part that I don't like, but I do have a question. Does the author believe in like different people have different kind of art when they are the audience? Because in my point of view, brush teeth is clearly not art to me, but it's kind of art to the author.