They don't need LLMs to scan everything. That's been possible with machine learning for decades. You could argue that they now have the compute in reach to make real time processing feasible, but they've already had that to some degree for also probably decades.
It's really that oligarchs and corporations around the world are using the collapse of the US to apply disaster capitalism everywhere, while everyone's distracted. Surveillance capitalism is now a trillion dollar industry that is intrinsically embedded deep within western militaries, "intelligence" (secret police), governments, and industry. They realise the charade of democracy under a capitalist system is nearing an end, so they're speed running to dictatorship. The ruling class won't stop until they own your soul, and everyone is assimilated by the Big Brother™️ borg.