The spin rates and other newer metrics can create more interest or less interest in some cases. However there is a reason all those scouts travel to Jupiter. In many cases the entire scouting dept of organizations. They could all stay home, save a ton of money, and get the trackmam numbers if that was all there was to it.
Most of the top pitchers in the ML were drafted or signed before the spin rates and other metrics were available. So the new technology is new and it will take some time to determine its true value. For example Kershaws curve ball doesn't grade high on spin rate.
We are friends with the owners and President of Trackman. They both understand there is a lot more data required before they can accurately predict success or failure. So right now it is important information, and each year it gets more important. It's just not quite stand alone information. And doubtful it ever will be the only thing clubs will depend on.