There are two issues the author raises (as I understand it):

1. People copying others' work, made much easier by AI.

2. AI companies effectively harvesting all the accessible information on an industrial scale and completely sidestepping any permissioning or licensing questions.

I believe both of these are bad and saying "people copied each others' works before the advent of AI" is a poor cop out. It's tantamount to saying that there's no reason to regulate guns more than say knives, because people have used knives to kill each other before guns were invented. The capabilities matter.

The way LLMs empower wholesale "stealing" rather than collaboration is quite evident: why collaborate when you can just feed an entire existing project into the agent of your choice and tell it to spit out a new implementation based on the old one, with a few tweaks of your choice, and then publish it as your work? I put "steal" in quotes because it's perhaps not really stealing per-se, but there's a distinct wrongness here. The LLM operator often doesn't actually possess any expertise, hasn't done any of the hard work, but they can take someone else's work wholesale, repackage it and sell it as their own.

Then there's the second, and IMO much more egregious transgression, which is that the LLM companies have taken what is effectively a public good, but more specifically content that they haven't asked permission to use, and just blanket fed it into their models.

Legally speaking, it's perhaps A-OK because it's not copyright infringement (IANAL). But people on this site often hold the view that if something is a-priori legal, it is also moral (I'm not accusing you of this). What the LLM companies have done is profoundly immoral. They extracted a fortune of the goods and work made by others, without even bothering to ask for permission - or even considering this permission. And then they resell access to this treasure to the public.

Perhaps AI will bring an era of prosperity to humankind like we haven't seen before, perhaps it won't, but that changes nothing about the wrongness of how it started.