I have used Zero Dust for years and never had a problem. I continue to use it with no adverse problems.
Anyone Still Using Zerodust
Haven’t heard anything since the original scare, but I stopped using it. I think I never had a problem because I always swipe with LP#9 between sides, as per Brooks Berdan’s advice. One recent video said Wally discovered some type of oil on the ZD. I regularly cleaned mine with dishwashing liquid, which could have removed any residue.