Yep, it’s totally unenforceable, as you said. But the idiots will probably keep trying though until they get something workable, but no doubt equally objectionable.
But they'll ram it through anyway. If it perchance gets defeated on the floor, it will reappear as a rider on every unrelated bill until it passes in some unguarded midnight moment. Just as with all the Hollywood-uber-alles copyright legislation, we will have rely on the pirates and hackers to save our last shreds of freedom.