Well, welcome to life in a democracy. Nothing is ever settled with finality because there are plenty of ways for future generations to change the laws we cherish today--for good or ill.
We could revoke the 13th and 14th Amendments and have slavery again--there is no legal impediment to that. That we don't do that is a reflection of our cultural values--today--which we continually discuss and reinforce.
We could abolish the EPA, or the IRS, or the NSA. We don't because these have enough supporters who value what they do, today. The 2nd Amendment remains strong today because millions of Americans work every day to keep it that way.
So, the long-term solution for strong encryption must be a cultural one. We have to be prepared to fight the crypto wars forever, like unions are still fighting the labor wars a century later. Like civil rights activists are fighting racism even today--and will be for the foreseeable future.
Is that depressing? Not to me; I find it inspiring, much better than a world in which government decisions are truly final. Beware that level of power IMO.