I follow BlendOS since a while.They have the same issues as VanillaOS. In this list you can add RegataOS, Aeon… Aeryn…
Which is stability. Mostly through small community size (which leads to less testing) and / or small team of devs.
Nobara for example, also has just one main dev… But they grew a big community. That made it really stable very fast. With many hands testing things out.
I am not sure why Fedora Silverblue is not rolling. I will have to check the definition for “rolling”.
With silverblue (or based on) you will never have to deal with major updates. Like Fedora 40 → 41. And you get all the new stuff very fast… isn’t that “rolling”?