alt Hacker NewsA reasonable interpretation would be that they had a previous process that eliminated delivery latency and required no manual manpower for responding, so changing it has been done to induce artificial friction, against the intent of the license.
Not that the intent of a license can be enforced.
Compliance with the intent of the law is one of the things courts get to decide on.
Someone just needs to be crazy enough to sue (and rich/lucky enough to win)