community event + mewtwo pointer?

sorry if it's already been posted somewhere

so pikachu with surf is going to be spawning during a three hour window on the weekend at parks. So if you see a crap load of pikachu during that window you know that niantic recognizes it as a park. Furthermore if you have a bunch of people catching pikachu at a park and there is a raid it makes it a pretty good chance that to gen an ex raid.

is this niantics way of herding people to ex-raid eligibility?