They increased the bandwidth and traffic immediately filled the new capacity. While this could be just a faster web site attracting more users / users were giving up due to slow loads before, it could also indicate that they have a lot of automated traffic that will consume whatever resources are available and can be throttled without endangering their mission.

I hope they'll look into it, find a way to identify that traffic, and then (ideally) classify it accordingly and continue to serve it only after all human traffic has been served (i.e. if they run into a bandwidth crunch due to bots, only the bots suffer, and they don't need to upgrade as quickly).