This article (and every other article I can find on the ban) conflates whipped cream cans[1] with whipped cream chargers[2], which is what the law[3] bans.
[1] https://www.gogetdelivery.com/media/catalog/product/cache/1/...
[2] https://i5.walmartimages.com/asr/b73db9f0-6258-47a6-9954-bd7...