Massively impressive! A very exciting paper https://arxiv.org/abs/2009.12334v4 from the first two authors shows how Starlink can be fused with ordinary GNSS to get extremely impressive +56 dB anti-jam advantage (see Figure 1).
My guess is that the reason they terminated work with the UT Austin researchers is that they've signed a commercial deal with someone else that hasn't been announced yet.
GPS-independent PNT (position/navigation/timing) is a significant area of both market and military/civil government interest right now, and has been for a while. They won't be indifferent to it at SpaceX or at any other organization that operates or plans a constellation.
