10Gb of "everything is a Flatpak" isn't exciting.
Steam, gamescope, and nearly every other listed feature are native packages.
$ flatpak list --columns=size,name | grep MB| grep -Po '\d+\.\d+'| paste -sd+ | bc
7025.2
$ flatpak list --columns=size,name | wc -l
54
$ df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 232G 15G 214G 7% /KDE image Flatpaks: https://github.com/ublue-os/bazzite/blob/main/system_files/d...
vs.
GNOME image Flatpaks: https://github.com/ublue-os/bazzite/blob/main/system_files/d...
If you're looking to save a few gigabytes, then I suggest using the KDE variants.