You don't need GPUs to do traffic analysis you just need more Five Eyes, TIA, room 641A stuff.

Oh, entirely. But that also theoretically benefits from AI: https://www.sciencedirect.com/org/science/article/pii/S1546221824004636

Hence things like: https://mullvad.net/en/vpn/daita

But further? I'd encourage you to explore what Gospel and Lavender are.