This is the reason we don't let people who think in terms of "how many microscopic needles is it okay to have in my daughter's vagina" make legal decisions. It's the same reason we don't let victims decide the punishment for crimes.
Well, in the world of civil lawsuits we do exactly this, which is sort of my overarching point here. Not much can be concluded from the settlement other than J&J being tired of litigation.
The burden of proof in civil cases is "a preponderance of the evidence", which is basically legalese for 51% likely or better.
That said, it is quite possible that pure talc itself is dangerous to epithelial cells but that's not well established yet.
A responsible company would have stopped sourcing talc from asbestos-containing mines in favor of many other slightly more expensive sources that never showed any asbestos. J&J didn’t.
That's not to say there aren't a bunch of shady lawyers filing suits on behalf of people who didn't actually have provable damages from the products - but I think it's okay to hold companies to very high standards in cases like this.
Notably - in the 1950s, the USGS published guides on where to mine asbestos in the US [1]. This map is the precise geo coordinates that the USGS included for the Ludlow site and then the site of the Vermont J&J talc mine... literally 2 miles between the two. So again, consider my credulity strained that the only found contamination a handful of times decades ago mining talc directly next to known asbestos deposits.
https://www.google.com/maps/dir/43.383623,-72.647868/Argonau...
[1] Page 7 in Windsor County: https://web.archive.org/web/20200319042340id_/https://pubs.u...
Yes it is possible that J&J was careless, and the the product was tainted, and these plaintiffs were exposed, and their cancer was caused by that exposure but the evidence is VERY thin.