Yup. But I'd like to stop/deter the copycats. Banning bump stocks sounds like a small step in that direction. Let's not forget that bump stocks were declared legal by Obama's ATF.
Because Obama was looking for a way to arm his minions, too. Don't think all that ACORN money went for phones, or that all those firearms were bought by Conservatives. Don't ignore Operation "Gangwalker".
And don't ignore the obvious pep rallies for violence among the Liberals, either. BLM ("BIE": Black Identity Extremists, as the DOJ is referring to them) and AntiFa, and even OWS, not to mention a host of "street" gangs which are actually reaching the status of transnational criminal organizations, and we haven't even brought up radical Islamists that are being imported without vetting.
All of these amount to groups with set hierarchies, command and control, communications, organization, and in the case of some of the gangs, people who have no compunction about breaking laws and killing people, up close and personal.
Taking the means to reply in kind from people who are law abiding only tilts the playing field toward criminal elements, not away from crime.
The genie is out of the bottle. People know it can be done with a rubber band or bootlace, and they will try, discover, practice, make other devices to make that fire not only rapid, but more accurate.
But you want to lock up the corral after the horses have escaped.
I think I'll go to the range and see how many mags it takes to be able to pop off a three round burst, without so much as a rubber band. Once you understand the principle behind it, you should be able to duplicate it even without the stock or any extra hardware at all.