Marion Hammer, is that you?
ANY semi auto can be bump fired.
By your logic all semi autos are actually full autos.
Tell us something we don't all know, ace.
The bumpstock is a mechanical device, permanently attached to the rifle (e.g., modifying) which enables full auto. Your thumb when hooked into your belt loop doesn't meet that criteria, genius.
Again, I do not agree with the NFA. But approval of the bumpstock should never have been granted to begin with under current regulations/laws. Change the laws and regulations? I'll fully support that. But I won't cry crocodile tears over bumpstocks.
Use a little more logic when responding and save everyone some time.