The edge of filter bubbles in the counties and communities model was limited by the speed of information transmission. Rumors and new developments were highly prized due to the difficulty of information transmission.
In a world where the costs of information transmission aggressively races to the bottom, filter bubbles are no longer driven by geoinformatic limtations. Instead, they are driven entirely by the limitations of each individual's capacity for cognitive overload management.
The bubble beings and ends within the confines of the cognitive overload management of every individual in today's world. Therefore, any "political issues" that shares a structural resemblance of said strategy will find have an advantage in memetic survival. Anything that defies it too deeply and begs for more complexity will be eschewed and outright purged.