Why not?
Think about what you are saying, my friend.
Maybe they can. Seems to me, there are many other uses for kanthal wire and cotton. Cotton doesn't have to come in flat strips suitable for coils. And electricians can buy wire. But maybe the FDA can ban whatever they want. I just suspect I'll be able to buy wire and cotton.
Are they going to pull cotton balls off the shelves of drug stores? Will electrical supply stores be told they can't sell wire?