More recently in version 2023.06 of rpm-ostree a search command has been added:
rpm-ostree now supports the “search” verb allowing users to use rpm-ostree to search for available packages. An example of this is: rpm-ostree search *kernel
It’s very unlikely that users read the rpm-ostree changelog, so an article about the new feature should allow them to know that the feature now exists.
The idea of the article would be mostly to show the old way users of ostree-based distros had to search for packages (that is, with dnf from inside a toolbox) and afterwards present an example of the new way with a search for neofetch using
rpm-ostree search neofetch.