Pete is certainly not making that point now, but he was or seemed to be initially, such as when he said that you "leave 3% of your population with no means of support." If (hypothetically) all 3% were just months away from a job, then you wouldn't really have left anybody with no means of support, would you? Even if another 3% were about to briefly become jobless.
(NB: Yes, of course some people do remain jobless for longer than a few months, but I'm focusing on the logical point here, and whether Pete's case depended on it. See our back-and-forths about Britain for better realism).
"I don't understand why you say it needs individual permanence to put those two quotes in contention."
Well, now I'm confused, because it seems blindingly clear that it needs it. Let's review this slowly. I said "The ONLY "idealization" being made there has nothing whatsoever to do with whether the unemployment rate can reach 0%." In your Wed. 7PM post, you quoted the following as in tension: "In fact there is no such person [condemned to unemployment] in (at least ideal) capitalism." Let's call the former statement p and the latter statement q. Now q is only in tension with any statement that suggests that there IS a person condemned to unemployment -- that's the negation of q. Therefore, by placing these in tension, you were suggesting that p implies (or suggests) not-q, i.e., that a nonzero unemployment rate implies the existence of an individual person condemned to unemployment.
In other words, you assume individual permanence of unemployment. Otherwise, the tension you are finding makes no sense. If 3% unemployment can exist, but no individual be condemned to unemployment, then both my statements are true, and in particular, are not in tension.
"I'm not sure that "no such person [condemend by the system to *permanant* unemployment] exists," but they are definitely so few and far between that I wouldn't press the point."
And that's exactly what I meant when I repeatedly argued that the "idealization" I had made wasn't an important one, and could be addressed at the margins by legislation that wouldn't alter my primary point.