She maybe don't understand technology, but I get the feeling that breaking or weakening p2p is not what she talking about. The scanning means scanning performed on the end devices, not of the communications. The idea is to force communication messengers providers to perform scan on end user's device. That, obviously, will fail, as many (including child predators) will migrate to messengers that don't do that.
The informed ones anyway. They would be happy to get the uninformed ones as it still makes their numbers look better and justifies their position of weakening the internet.