It's bizarre though, because the latency problem is self-inflicted.

If you were going to build a brain-computer interface, why on earth would you scatter parts of it across three different countries like this? It's not exploiting a vast data center or anything, just a VLSI chip that happens to be far away. If you did have to do that, why wouldn't you directly connect all three centers instead of having a Python script(?) in the middle handing off information.

The membrane time constant of a biological neuron is also about 30 ms, which gives you a fair amount of wiggle room even in the face of lag.

Their solution seems clever, but other than a vague mention of "IoT brain implants" (please god, no), I don't see what problem it really solves.