Can't wear feelings and validation...
So the conclusion is that the utility of the activity is subjective, and if most people spend their time listening to AI factually incorrect podcasts about knitting and enjoying it, it's no different than knitting yourself and enjoying it. The blog was poor in this disambiguation, and pushed a more Aristotole-like ontological view of what is meaningful, which is more common view in engineering/hard-science dominated fields.
If people did not feel good from passive consumption, no-one would be listening, following or looking at things, people would just make and create all the time, which is obviously not true.
If what you say is true, there would be no value from AI-generating blogs in question, or AI-generated movies/youtube films. Yet both have millions of downloads, views and listens, as the article mentions.
Knitting is not just entertainment, it's a means to produce useful things as well as artistic projects.
Many people are either lazy or have been discouraged from creativity by a consumer society and the education system. I've watched plenty of online content. I have nothing from it but feelings (the very subjective opinion you talk about), and very occasionally a tiny bit of new information. Knitting creates clothing which can be used to keep out the cold (objective) and so on. In fact this very winter, I wore things my friends knitted me. Gloves, hat, socks, snood, scarves... They served a practical function beyond entertainment or just looking good.
People might not care. I might identify as a runner because I bought a little jacket, expensive shoes, and wide-purple-tinted sunglasses, do I have to run? Not necessarily if the objects and my identity gives me the feeling of completion and satisfaction.
If your premise was true for all people, and the sense would be distorted, we would not see these phenomena, and people wouldn't listen or engage with AI-content. But the biological reality and the path of least resistance seems to prove us otherwise.