It's not going to kill professional photography, but the folks who buy a DSLR for the bokeh might not have a reason to buy that camera. Might shrink the market for DSLRs.
It actually works surprisingly well, but I've not traded in my SLR. Being able to do something similar with a second lens -- or even using Project Tango sensors -- to avoid the post-exposure motion would make it more useful, but I suspect still not as versatile (and even with my SLR, the difference between my relatively cheap lenses and borrowing someone's more expensive lenses, on the same body, is quite obvious).
This means objects and figures that aren't faces might not be tuned too well.