Now, the percentage of those jobs lost because some of the content was accidentally copy written may be small but does account for some percentage of that job loss. So it isn't actually a non sequitur in my opinion.
You mean like tractors, electric motors, powered looms, machine tools, excavators, and such?
Yeah, and? In the limit, those things are why our population isn't 90% unfree agricultural laborers (serfs or slaves), 9+% soldiers to keep the serfs in line, and < 1% "nobles" and "priests", who get to consume all the goodies.
This same basic argument about "putting artists out of work" was made when photography was invented. It didn't work then, and it's not going to work now.
I, personally, think that AI is a tremendous opportunity that we should be investing in and pushing forward. And my existing dislike of property right laws does feed into my views on the training data discussion; prioritizing a revolution in productivity over preservation of jobs for the sake of maintaining the status quo. But I'm not stupid enough to think there will be no consequences for being unprepared for the future.
Rather unfortunately, I'm not quite clever enough to see what being prepared would actually look like either.