In the old days distros used to separate the location of binaries in several places like /bin/sbin/usr/bin and /usr/sbin there was this idea that system binaries would go in /sbin while the rest in /bin and the similar dirs in /usr were so that you could mount a separate drive to store more binaries. This is from a time where storage was an issue.
These days distros usually just symlink all those locations to /usr/bin with the exception of fedora, which still keeps some split.