I don't think anyone is arguing that the consumption is illegal. It's the reproduction that is illegal.
Read a book, that's fine. Write a book, that's fine. Read a book and then write a book that is 99.9% the same as the book that you read and sell it for profit without a license from the original author, that's infringement.
No, if you read the article, the point is in the training, not the reproduction.
That's what all these lawsuits are about - it's the training not the reproduction. I already agreed in my first comment that the reproduction is off limits.
In this case, it appears that Meta torrented illegal copies of the work to do the training. Obviously that's bad. But conflating that with training itself doesn't follow.