"Since the end of atmospheric nuclear testing, background radiation has decreased to very near natural levels, making special low-background steel no longer necessary for most radiation-sensitive uses, as brand-new steel now has a low enough radioactive signature that it can generally be used."
I dont see that:
1. There will be a need for "uncontaminated" data. LLM data is probably slightly better than the natural background reddit comment. Falsehoods and all.
2. "Uncontaminated" data will be difficult to find. What with archive.org, gutenberg etc.
3. That LLM output is going to infest everything anyway.