I read your link. I think my main issue is the framing as though AI is just a new tool that people are afraid of similar to the introduction of the camera.
Even outside of capitalist exploitation, AI generated art suffers from an inherent creative limitation. It's a derivative and subtractive tool. It can only remix what already exists. It lacks intention and human experience that make art meaningful. The creative process isn't just about the final image. There's choices, mistakes, revisions, and personal investment, etc. No amount of super long and super specific prompts can do this.
This is why a crude MS Paint drawing or a hastily made meme can resonate more than a "flawless" AI generated piece. Statistical approximation can't imbue a piece with lived experience or subvert expectations with purpose. It is creative sterility.
I can see some applications of AI generation for the more mundane aspects of creation, like the actions panel in Photoshop. But I think framing creative folks' objections as an act of self preservation as though we are afraid of technology is a bit of a strawman and reductive of the reality of the situation. Although there are definitely artists that react this way, I admit.
It is true that new tools reshape art. The comparison to photography or Photoshop is flawed. Those tools still require direct engagement with the creative process. In the link you provided the argument is made for a pro-AI stance using the argument that the photographer composes a shot and manipulating light. In contrast to AI which automates the creative act itself. That's where their argument falls apart.
As for democratization goes the issue isn't accessibility (plenty of free, nonexploitative tools already exist for beginners) and that is something that could be improved. AI doesn’t teach someone to draw, operate a camera, paint, reiterate, conceptualize, and develop artistic judgment. It lets them skip those steps entirely resulting in outputs that are aesthetically polished and creatively hollow. True democratization would mean empowering people to create.