It’s sometimes about other things than benchmarks… like CoW straining I/O on really old disks, or that you already use something else and don’t need the “features”.
There are for btrfs too… which I have used a lot of times before I switched to Kinoite.
GNOME defaults are definitely not sane for me. AND you need to be able to change without fickly extensions.
It’s not GNU/Linux, it’s just a general “trend” everyone is following, and GNOME wants to attract “new” users and thus misled into “we know better“… the devs are problematic though…
The extent of GNOME’s “defaults”
That doesn’t affect the UX much from the user’s perspective though… the problem with GNOME is the rigidity and fixation, with KDE too many nuts and bolts to handle, not the framework. There are sufficient apps in either framework with varying levels of rigidity and customizability apart from the DE apps.
LiveUSB for quick testing, VM for thorough testing, why not just dualboot it if you are ready? It is mostly quick and easy, and easy to delete too…
By chance, if you use immutable variants, you can change DEs just as easily as dnf swap, via rpm-ostree rebase or bootc switch, no issues, can rollback, packages files all untouched.
(I have done it, have tried GNOME, KDE, COSMIC, and Budgie long ago that way … preferred immutable “Kinoite” KDE spin where KDE is much more comfortable)