I might be misremembering, but I think even the much maligned bump stock was created as an accessibility device originally. It might be another kind of similar stock that was victimized by the media, but IIRC the bump stock was designed as an aid for veterans who had lost a limb to allow them to use a pistol one-handed.
There's a lot of stuff like that that has been fear mongered by the media. Like suppressors. Everybody has been told that they make a gun basically silent when what they actually do is reduce the sound of a gun from "permanent hearing damage" to "not permanent hearing loss."
That's the one I was thinking of.