The confusion about 'pairs' is because it takes an interaction with another object to eject something from an orbit. (and as mentioned in the article it's not

The confusion about 'pairs' is because it takes an interaction with another object to eject something from an orbit. (and as mentioned in the article it's not clear how these could form on their own). So how these would form is not clear, we don't see binaries of gas giants orbiting stars, but to be ejected they would have to somehow have been 2 gas giants interacting with a third mass (and not the star they are orbiting) to eject the pair. Pairs of objects can't couple like this if they randomly meet in space because they would always be on a hyperbolic trajectory relative to each other unless they had a mechanism to bleed energy, which generally they do not outside of a stellar disk. I guess my hypothesis is that these gas giants were ejected from the system they formed in, but rather than being merely ejected they also collided with something which ripped them apart. Imagine if the collision which created the moon also ejected the earth from orbit, like that.