"It's available for Lacerte, why is it not available for Proseries?"

Because the folks using Lacerte pay more for their software.  By spending less for the software we have chosen to ride in the back of the bus, not the front seat.  Or Lacerte has smarter programmers.  Or someone at ProSeries didn't get the memo that the form was going to exist.  Or it's Intuit --------- who can explain anything that they do?