I'm no expert at the law but I would saw 'yes.' Our (Ohio's) carry permits are firearms only. They are very fun though. I use to toss those around a lot in my younger years. Dreams of being a first rate ninja take practice.
it's just another self defense option. i figured it would be illegal but i wasn't sure.
Same concept you have to worry about with firearms - what is beyond your target. This is even to a greater extent with a throwing star. Ever thrown a frisbee or any disk shaped object? They are highly unpredictable unless you have really practiced with them.
Drop the thoughts.