I think I just sprained my brain reading that...
CC
Same here. What I managed to leach out of it was that these physicists propose the Einstein-Rosen bridge theory wasn't meant to describe or propose something as physical as an actual wormhole, but was formulated for it's explanatory usefulness to describe how quantum mechanics works.
Gaztañaga and his team reexamined the original idea. They do not view the bridge as a path through space, but as a mechanism of how quantum mechanics works in curved spacetime. Their findings suggest that to fully describe what happens near black holes, we need to consider both directions of time, not just the forward-moving one that we experience.