Is the information provided on module page outdated?

I would love to know the same :)

also curious

The text is technically not correct, since I can also see it in Drupal 10.1, listed under "Core (Experimental)":

Field Layout
Allows users to configure the display and form display by arranging fields in several columns.
Machine name: field_layout
Version: 10.1.0
Requires: Layout Discovery (disabled)

But it has actually been decided to deprecate Field Layout module from Drupal core, it just hasn't happened yet: 📌 [META] Enable layout builder for form displays, and deprecate field_layout Postponed .

A link to that issue could be added at the top of the project page?