The only truly unprecedented thing is the white-collar part. Otherwise it happened many times over that entire regions where suddenly out of job and job prospects. Automation and offshoring have equivalent impacts on the affected job market.
And I think that example largely carries over to many other big picture and/or creative tasks. I think it would likely require another revolutionary leap for LLMs to get to that point, and that leap is probably not coming any time soon, if ever, at least not with LLMs.
Another practical issue is that LLMs, as difficult as it can be to imagine at times, are still just glorified autocomplete machines. And so genuinely novel advances will not be coming from LLMs. For instance take LLMs back to the early 20th century and none of them will discover relativity, even with infinite power/time. It's just so unlike their training material, and in direct contradiction to much of it, that it's simply outside their reach, let alone grasp.