Not if you supervise. Besides, up until a couple years ago, everyone fed live exclusively. Most breeders still do. It's so difficult to get hatchlings on FT that most breeders start babies on live. Very few people ever have a problem with bites unless you leave the rat unattended and the snake does not eat right away or the rat is too big. A small rat is generally not going to be aggressive like a large rat will.

I feed most of mine prekilled. Solves the problem of not wanting FT and being worried about walking away from the tub with a live rat in there.