Not really. Have you listened to the average member of Congress lately? Incompetence runs deep throughout all levels of government.
Instead, look at it this way: everyone has their area of responsibility. The head of the CIA is charged with providing the best possible situational awareness for the U.S. government. He's going to make proposals and requests that will help him do that.
He's not charged with balancing all possible consequences from his requests, and he's not going to do so.
But ... that seems like quite a level of incompetence for someone trusted with the position of Head of the CIA?
By which I mean, not charging him with that responsibility is a mistake (in gov structure), but him actually not doing so is his own incompetence, is it not?
To a man with a hammer, everything looks like a nail. To a man who only has words, everything looks like a soapbox.
How is calling for a really bad idea because it's the best thing to say different from the level of incompetence you say is too big to assume?
edit: "not going to happen" could be read as "not going to be effective." I wouldn't actually be surprised if the US ended up passing some law restricting crypto to an approved list of backdoored schemes (surprised: no, dismayed: yes), forcing people into hiding their crypto in deniable ways. What some people don't seem to grasp is that no matter how much you outlaw certain math operations, whether or not the end users comply with those laws is ultimately up to them, and the terrorists simply won't comply.
I think assuming that level of incompetence is a big claim.
It's simply much more likely that the actual plans/goals and the talking points and press releases about the plans/goals are mostly unrelated, as usual. You can infer that those calling for backdoors have decided that calling for backdoors is the best thing to say, inferring anything more requires more information.