Well no, I didn't quite say that, though looking back at it now I can see that the sentence you're referring to in my 1st post on this topic is less than airtight for what I meant to convey about my personal idea of a military action, and can be used to get to where you took it transitively. What I did actually say was that an act that is strategically calculated to deprive an "enemy" of a resource is military. Rather than try to stick my finger in every conceivable hole that someone might poke into my inept attempt at writing a personal definition, I'll respond to your question and explain where I'm coming from, and hopefully those things will do a better job of expressing what I was getting at than I did, even if not in the most concise and specific terms.
For something like tariffs or sanctions, there is a legal framework and precedent within which these actions are broadly acceptable. Nations are entitled to set the terms on which they do or do not trade, and nobody is under an obligation not to be greedy or cutthroat in the way they deal with each other as long as they're operating in accordance with established rules. That being said, I don't believe that it's crazy to ever refer to such actions as being "warlike"; I think they can potentially be, or can at least be a tool in the waging of war. A cold war can certainly have many casualties. I think a measure of subjectivity is being exercised on anyone's part in drawing the lines between these uses of the word "war".
As far as my personal line I was trying to draw a two posts ago, I probably should have used the word "aggressive" instead of "strategic", and/or "attack" instead of "move", and made my case for the hacking qualifying as an attack on the basis of it being done a)with the specific purpose of doing damage, without even a fake pretense of any kind of other motive, and b) being forceful, covert, and illegal. In other words, I guess the line is somewhere between scumbagging other nations for profit using established rules advantageously, and using means outside of the playing field of business, politics, or anything else even remotely legal solely to damage another nation. While I believe the former can be characterized as an attack very effectively, the latter is an actual one in that it is forceful and cannot be addressed by any kind of reform (since the act itself is one that indicates that engagement on a political level has been foregone in favor of sabotage), only retaliation. It throws the rulebook out the window and issues a challenge on a different, combative level where anything goes.
To be fair it's not just arbitrarily designated as such by Ethan, it's a term that describes the mode of the action in we're discussing. If you're saying that the difference is purely academic and that we should judge an action solely by an intended result, then I would say I agree with you more than a little. Just because the rules exist in such a way that they can be used to abuse people doesn't mean that those abuses are anything but that. Generally though, if not being done to further the economic standing of the nation trying to enact damaging economic policies, there is at least a pretense for a political or economic goal that goes beyond "We're going to fuck those guys up". At least a pretense. If not, then I'm ready to start using the "w" word for that action.
As far as the illegal trade policies interpreted as an act of war, I think that any policy that can be referred to as illegal is inherently (theoretically at least, not necessarily in practice) already withing a framework wherein it would presumably like to pass as acceptable, and so can be addressed within that framework. There is finessing of legal language involved, and deceitful language. The idea is to look legal while being illegal. Again, I wouldn't say that makes it right or any less damaging.
Nobody can say "Hey, no fair, you're not supposed to hack our companies and then use the information and fear as leverage to keep them from selling their products!" though. Everyone already knows that that's not legal or acceptable. If I wanted to be the Frank Luntz for US warhawks in congress, I might label such an acts as the DPRK are being accused of as "economic terrorism".
I hope that makes sense. I came back to this response a couple of times throughout the day, and it looks pretty different than what I began writing. I've got company coming soon though, and can't work on it anymore, nor do I want to put it off because then I'll likely take forever, that is if the response is even still relevant at the point that I'm ready. I've lost many posts to that...