I wonder if we killed that scientist or not (although I suppose we did) but even so I think the emperor was watching everything so that research may go on. That said I think that was the most interesting part of the plot and a shame it was revealed only in the final arc, I do hope that the post story content will try to pry more on the subject, because aside the fact that allows ppl to control primals it could also be a way to reverse the tempering effect of a primal imho