Sure, I think that is a fair view. I almost added to the comment the following, which i suspect you would agree with:
"obviously they should have some area of significant technical competence that is within an area the company cares about or works on. I just wouldn't necessarily expect it to be programming languages, and they should definitively not try to overstep their competency".
You are giving the case where either they have no area of technical competence, or one that, uh, charitably, is so far outside anything the company does/cares about that they can't explain it to you.
That one is a clear fail of this particular test :)
also obviously, this is a necessary but not sufficient condition to be a good CTO.
Another good condition would be "generally assumes the time of people 'on the ground' is the most valuable time the company has, as this is what directly leads to features/revenue/customers/etc".[1]
As such, the number of situations where such a meeting would be net positive for the company amount to something like:
1. you are about to save everyone 4.001 hours worth of work, increase per-employee revenue by 4.001 hours worth, etc, by talking at them for 4 hours.
2. The company is going under and therefore you are saving everyone 100% of their time :)
#1 is actually within the bounds of possibility, but I would certainly agree that it is much more likely that anyone who believes they are about to accomplish that is probably suffering from hubris of the highest order.
[1] I tend to believe that most management is not net positive value (whether they are necessary or not for various reasons is somewhat orthogonal), and managers/leaders who generate net positive value are rarer than they should be.
To the point of your article, I tend to believe you have to start as viewing yourself as net negative, and then trying to understand how to either lower your overhead, or generate enough value to overcome the overhead, or both.
Instead, i think you see managers/leaders who start by believing they exist as a net positive and think occasionally they screw it up and are only a little net positive.
On day 1 i would give them a 1 question test that says "do you believe you are already adding net positive value to your team by being here" and send anyone who answers 'yes' to the reprogramming station.