Why do you publish a page "in development" but disable it?
For multiple reasons. One of them is to do closed playtesting, and still have a page where people potentially interested in playtesting can read about the page. See Itch's own documentation on using the restriction options to do closed playtesting. The option to disable downloads is there for a reason:
https://itch.io/docs/creators/limited-releases#the-toolset/closed-playtesting
Another is to just have a page where people can learn about the upcoming game. In an ideal world, people could add the game to their wishlists from here, but Itch doesn't have wishlists, only confusing multi-purpose "collections". but I digress, it's still nice to have a page where the game can be properly described in detail, that I can point people to who want to learn about it.
So, Itch has built-in options to have a public page before the game itself is publicly available. The logic for how the Most Recent list works should naturally make sense also for this scenario.
And saying that the "most recent" (and other lists that use recency as a partial metric) don't matter anyway is unhelpful. The pages are there, so clearly they have a function, and that function should work in a sensible way.