Same playbook since 2003. Buy a dead nonprofit, resurrect its MX, blast until reputation tanks, burn it down. The only thing that changed is the TTL on those SPF records got shorter while everyone else got slower at noticing.
I still say PayPal's actual security push this week is what created the opportunity. You don't run a major account verification campaign without predictable templates for scammers to clone. Marketing announces, security cleans up, users get caught in the middle.