The point you're making is valid, but also exposes a common theme in litigation against big tech. It's pretty common to hear something like "company XYZ used data ABC to train a model about their users and is court ordered to delete it". It's unlikely that anyone in the justice system has even the slightest clue how to ascertain if this actually happened and certainly no way to prove it has been deleted. The court gives the order, the company says they have complied, & everyone pretends to go back to the way things were before hand.