If people think a piece of art is AI, the impression is that you didn't spend any amount of time or effort on creating it (even if you did, which, hilarious if true. you could have been making real art). Further, the vocal anti-AI art people who view it as a product created by grinding down billions of person-hours of experience and work into a sort of uniform slurry which is then fed back to them. They do not appreciate this meal.

Half of his recommendations for alternatives take less time to make. You (and the author) are making assumptions about what "people in general" think without any data to back it up. What you've experienced anecdotally in your social circle doesn't necessarily apply everywhere.