HUH, ok that is good news ofcourse but what about this:
Specifically:
If you run rpm-ostree install several times consecutively without rebooting or applying changes live, only the most recent command will take effect. If you install wget and strace consecutively and reboot afterwards, only strace will be present after reboot.
which is a copy-paste from the documentation here.
additionally: there are more topics here about people asking how to run multiple rpm-ostree commands at once…