My reaction seems to be unique so far. I would think it much better for the Wikipedia project that we do not publicise that we know exactly who is doing this. It is fascinating to watch the congress staffers at work. It is just a pity that shortly they will smarten up and be doing this with proper accounts via different IPs.
If there have only been a thousand changes so far, most of which were positive, this does not seem to be a "major" problem. Certainly not compared to the information we're gleaning from this. So, by all means, let's continue to revert the particularly obnoxious changes, but asking them to "stop it" will simply make it invisible.
Steve