That's a pretty sloppy reason. A nuanced topic is not well suited to be explained in anything but descriptive language. Especially if you care about people's livelihoods and passion. I care about my artist friends, colleagues, and acquaintances. Hence I will support them in securing their endeavors in this changing landscape.
Artists are largely not computer experts and artists using AI are buying Microsoft or Adobe or using freebies and pondering paid upgrades. They are also renting rather than buying because everything’s a subscription service now.
I really don't like this characterization of artists. They are not dumb nor incapable of learning. Technical artists exist too. Installing open source AI is relatively easy. Pretty much down to pressing a button. And because it's open source, it's free. Using them to it's fullest effect is where the skill goes, and the artists I know are more than happy to develop their skills.
A far bigger market for AI is for non-artists and scammers to fill up Amazon’s bookstore and the broader Internet full of more trash than it already was.
The existence of bad usage of AI does not invalidate good usage of AI. The internet was already full of bad content before AI. The good stuff is what floats to the top. No sane person is going to pay to read some no name AI generated trash. But people will read a highly regarded book that just happened to be AI assisted.
But the whole premise is silly. Did we demonize cars because bank robbers started using them to escape the police? Did we demonize cameras because people could take exact photo copies of someone else's work? No. We demonized those that misused the tool. AI is no different.
A scammer can generate thousands of garbage images and text without worth, before an artist being assisted by AI can make a single work. Just like a burglar can make more money easily by breaking into someone's house and stealing all their money compared to working a day job for a month. There's a reason these things are illegal and/or unethical. But those are reflections of the people doing this, not the things they use.