In which case I am saying that that seems dangerous for them to be doing under this law, but that the concept of a spam filter isn't fundamentally broken and so

In which case I am saying that that seems dangerous for them to be doing under this law, but that the concept of a spam filter isn't fundamentally broken and so people--such as the person I am responding to--who seem concerned that they won't be able to filter spam going forward are off-base, as I would think the spam filter need only be configurable (and, certainly, it would not prevent a third-party spam filter from existing).