I don't follow the point you are trying to make. First you say to focus on the attack which is more probable, then you highlight uncommon but "not impossible" attack vectors.
I'm highlighting the latter to be more persuasive about the former. There are specific, common attack vectors, which can be mitigated in a human manner, and an endless list of uncommon, such that even if they happen, you're likely affected one way or another.
For example, if, say, it was found that all Windows OS's had a vulnerability which weakens the RNG (or whatever), it can harm everybody - including you who're not using Windows - because of the market upheaval.
I don't know, I might be wrong.
At a certain point you just want to sleep in peace and stop worrying about every last possible way of how someone could steal your coins that you might have missed.
It's just that you're usually not
so concerned in other things in life, which are much more likely to happen, but you're going to exaggerate it with the cold storage. Don't know, again, but I feel it's purposeless.