The only known negatives with nicotine is that it's apparently a bit stressful for the heart. So it's still good to avoid taking it, but if you're going to take nicotine anyways, it's the safest delivery method.
Do other countries also have an ingredients list on nicotine pouches? Sweden has always had it (even on snus), as it's classified as a food product. I've always found it interesting that a product that shouldn't be swallowed has an ingredients list, but products that "should" be swallowed (such as alcohol) doesn't.