They may be ignored, but they can still do a lot of damage. Consider all the folks languishing in prison for possession of small amounts of the wrong neurotransmitter agonist.

This mess -- if it goes through -- will do for your ability to keep information private what the war on drugs did for your ability to keep your home life private: that is, it'll give the cops not merely the power (which they already have) but the incentive to carry out intrusive searches.