There was a period a few years ago when you couldn't find a gas can that didn't have an annoying yellow device on the end of the spout. I think it was supposed to reduce pollution from gas vapors but it didn't work right and just made the cans had to use.
All these cans were made by the same company and it was clear that rather than doing everything right, they may have had a hand in passing the law that required the spouts. I don;t remember for certain if this was Blitz, but if so, maybe it is better that they left the scene.
You can thank California for those self sealing, non vented gas can spouts. C.A.R.B. approved cans are the only ones available for sale now, This is why the excellent Sceptor USGI cans can not be sold in the US as well.