Remember the Smithsonian has REEKED of politics spining the real science.
They OPPOSED ORVIL AND WILBER WRIGHT BEING DECLARED FIRST IN POWERED FLIGHT!
They propagandaed the Enola Gay Exhibit.
They SCRUBBED the Natural science museum of "male dominance" in order to be more sensitive to feminists rather than science.
It is no surprise that the only good the Smithsonian does is physical preservation. The explanation is best left to the sources outside of the PC investation of the Smithsonian.