I think Frog God did something to draw the ire of Paizo and gave up the rights to produce or continue to sell Pathfinder material. I believe this had nothing to do with PF2.That may end up being an interesting (albeit, perhaps unintentional) commentary on PF2's success (or lack thereof).
My shelves are full of PF1 material from Frog God Games, but they are not doing PF2. (Of course, I'm not doing PF2 either, so I can relate.)