Yea, but there is no way to distinct why ads don't reach the target, and as it's worded, they can't block service for technical difficulties but for intentional behaviour.

I haven't seen even if they specified whether it must be the account user or not. E.g. your network host or isp can do it.

So that seems interesting, unless they can do it on a whim anyways and dont have to prove anything. Though they could just say, "no free service if we cant serve ads".