> It's a very interesting question.
Thank you. The multiple downvoters I got appear to believe otherwise.
> I guess I'm OK with restrictions on ANFO in the same way I'm OK with our (US) current restrictions on Browning .50 machine guns.
That is where I think the comparison between crypto and guns breaks down. You're okay with restrictions on more powerful weapons - are you okay with restrictions on civilian use of more powerful crypto?
No, I don't think you are. I am not. The use cases and threat models are very different. For example, I think we are under frequent though usually irregular attack by people who want to acquire "secrets", which includes credit card and blackmail information but also more prosaic marketing information and the more Orwellian large-scale government data mining.
I think it's more appropriate to compare crypto to another type of munition - personal armor. (The United States Munitions List has the category Personal Protective Equipment. This includes "Body armor providing a protection level equal to or greater than NIJ Type IV".)
Yes, some people want to make access to armor more difficult, because it it used sometimes when committing a crime ("in the wrong hands, the same tech can be used for great harm").
But unlike the physical world, on the internet we face attacks every day. If there were random shootings in everyone's normal life then there wouldn't be the call to get rid of personal armor. Moreover, we face increasingly powerful attacks on crypto, and need to have mechanisms which can keep secrets against decades of future improvements.
> cow poop -- the fertilizer component of a homemade ANFO bomb
Whoever you heard that from was mistaken. The fertilizer component was ammonium nitrate fertilizer, not cow poop.
> It's a complicated issue. What do you think?
My primary interest is in highlighting how the argument you made doesn't really support your thesis.
As for my own beliefs on the topic, and bearing in mind that you wrote "I have zero desire to re-enact the same old gun rights vs gun control Internet flame war yet again.", I think the distinctively American views[1] for gun ownership are rooted in the US history of Native American genocide and Black slavery, and are an expression of a form of white male power and machismo. I see no reason to discuss it further as this pigeonhole is well known.
[1] By 'distinctively American' I mean to exclude the arguments one might hear in, say, Sweden for having a gun; eg, hunting and the fun hobby of target shooting.