I think bump stocks are not good for anything. Just a novelty, a danger. Like brass knucks or throwing stars. No good use for them.
Bump stocks are good for burning up ammo you may need later.
(FReepMail for you...)
So there’s no need for a high rate of fire per your interpretation of the second? The founders most obviously intended the 2A to be for defense, and intended it to avail the citizenry of access to weaponry commonly available to Infantry.
While it’s obviously a waste of ammo for many, the bump stock does provide the commoner with the ability to produce effective suppressing fire.
Additionally, approaching the idea of “safety” from the standpoint of object control rather than individual responsibility creates the fertile environment government needs to flourish. They can run amok studying the cost/benefit structures of objects and creating bureaucracies to manage and regulate them and decide who needs them and doesn’t. Once they’ve “solved” the issue of something like a bump stock it’s not long before they see that a budget cut is avoided by tackling the “important issue” of something like a semi automatic rifle...