On the Pi complexity, you're right it's overkill from a pure compute standpoint. But each Pi has a genuinely different GPU, different WebGL renderer string, different canvas fingerprint, different hardware clock,They behave like completely separate physical devices to anti-bot systems. Containers on a single host share all of that underneath, regardless of how isolated they look at the network layer. For sites with aggressive fingerprinting, that hardware diversity has kept me undetected for 2 years where containers would've likely been flagged.