Earlier quoted context omitted.
The only flatpaks here are ones installed by the user after setup, or ones installed by Fedora (Firefox for instance, you don't want your browser updating only when your OS does). Steam, gamescope, and nearly every other listed feature are native packages.
Brand new first boot Bazzite Gnome. That's 7Gb of flatpaks. $ 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.