The harm of generative AI runs much deeper than economics.
Creating is communication. When you share your work, you're sharing your mind. You're demonstrating mastery of a craft. You're inspiring others. The linked article is specifically about how AI is actively harming the relationship between readers and writers, and not in a hypothetical future, but right now.
Even if we enter a "post-scarcity" society, I'm concerned fewer people will create. Why speak if your voice is silenced under a sea of synthetic outputs? Yes, you can create because you enjoy the mechanics, but the communication will be gone.
Generative AI is a long term concern as it hurts something fundamentally ancient.