Can someone please explain to me, AI talent that is sought after is... is the search for mathematicians who can _create_ ML tools, or merely use ML tools (like

Can someone please explain to me, AI talent that is sought after is... is the search for mathematicians who can _create_ ML tools, or merely use ML tools (like scikit-learn or whatever-have-you, to optimize ad-targeting or things like that)? I take it most of the times it's the latter. In which the case the AI talent in question doesn't need to be the most hardcore programmer, just someone who knows statistics, can do some basic linear regression and whatnot and knows one of the more popular ML libraries, like scikit-learn or tensorflow.