Generally the safe way (and including remove save files) is -Rns.
It wont automatically grab more than it can, so if something is blocking you will be warned, and then you can add it to your line. Ex: sudo pacman -Rns pkg1 means also remove pkg2 and pkg3 but returns complaint pkg4 requires pkg1, so you then inspect, decide you dont need pkg4, and the command becomes
sudo pacman -Rns pkg1 pkg4
and it will remove pkg1, pkg2, pkg3, pkg4 and any ‘save’ files.
Thats still the safest recursive way and I dont remove using any other method
(besides a temporary one like dd if absolutely necessary like you show above)
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