What a lot of fuss. Over nothing. All so WUWT can do some EPA-bashing. Over a de-regulation would you believe!
Anthony Watts is running out of climate things to write about so he's decided to jump some sharks. He's claiming that the EPA is banning the use of argon in pesticides. It's not.
Anthony didn't bother reading the documents to which he linked. He just took science denier Eric Worrall at his word (archived here). Eric Worrall took science denier "IceAgeNow" at his word. None of them bothered to read the EPA material.
In fact, the notice states (my emphasis):
EPA is proposing to remove certain chemical substances from the current listing of inert ingredients approved for use in pesticide products because the inert ingredients are no longer used in any registered pesticide product.
Yep. That's right. They were on a list of inert ingredients approved for use, but now they aren't used any more. They aren't banned. They aren't needed, so why keep them on the list. In common parlance you could call it tidying up regulations. Doing a bit of housekeeping.