Sorry but that’s a pretty bad take. I’m not a medical professional but just look at other neurological disorders/diseases such as Alzheimer’s which has been researched extensively with billions upon billions of dollars and they still aren’t able to find any effective treatments. Recently a new medication was approved but as far as I know its effectiveness is still questionable. Yes, it is a problem that not enough money is put into research and finding effective treatments for stuttering. But in general, neurological disorders are very hard to treat; at least at the moment but who knows what will happen in 10-20 years.