seriously what did people expect? it's not like data centers can be linked by quantum entanglement, "yet". If you want to get rid of lag this is only way. if later they are able to get very low latency and high data rate between the data centers cheap enough, then when one world model comes into being it will come without lag increases. They said they are working towards that, but it will mean extra couple hundred of ms to coordinate parties if not on same data center with current technology.

If you have secret to faster than light communication between any two points on earth feel free to give SE the info, so they can setup the servers how you want, while making more than any small country on the side in licensing profits.