I was mildly interested in the movement but found it weird as well. Some causes seem good (eg fighting malaria), others like Super AIs just seem like geeks doing mental gymnastics over sci fi topics.
My church has a shower ministry, where we open up our showers to people without homes so they can clean up. We also provide clothes and personal supplies. That's just about the opposite of what EA would say we should do, but we can count exactly how many showers we provide and supplies we distribute and how those numbers are trending. Shouting "AI and asteroids!" is more EA, but it eventually devolves into the behavior you describe.
If we want to rationalize this EA style, we could say these small acts to have an exponential effect: 1 person can inspire 2 to be more selfless. So it's better to start propagating this as soon as possible, to reach maximum selflessness ASAP :)