I am not missing the point at all, I mentioned previously that there are numerous other ways that a potential buyer can arrive at a listing, despite it not being searchable on eBay.

You don't have to keep your listings active if you go on holidays, people do it (and pay the cost) still because there's other benefits to it aside from being visible to buyers. I mentioned a couple of those reasons already, too.

And like I said, while there may be some out there that would be cool with their search results, already full with a variety of choices for them, containing results they can look at but not purchase, most would rather eliminate such listings, and I suspect it would be even more annoying if it was less a case of "This item will be available to purchase after X date", and more "This item might be available to purchase after X date, or it might not, depends what happens", such as would be the case when you take it elsewhere to try and sell.