> I have a growing suspicion that this is the Great Filter.

Ackshually... It can be our filter, but it cannot be the Great Filter.

The Great Filter has to apply universally, to every plausible society. If even a few are cooperative hiveminds, or empires ruled by an iron fist, or... whatever else you can imagine that doesn't squabble internally... then the Filter does not apply to them, which means that their absence is still weird.

The Filter has three plausible answers, IMO: (1) Some variant of the planetarium or zoo hypothesis; (2) every advanced society, universally, decides to transcend into data centers powered by rotating black holes and stable for trillions of years, or something similarly weird; potentially also New Physics, like waste heat to mass conversion; (3) the filter is in our past and abiogenesis is a lot rarer than assumed.