fs corruption due to power loss happens on ext4 because the default settings only journal metadata for performance.
I guess if everything is on batteries all the time this is fine, intolerable on systems without battery.
The FS should not be corrupted, only the contents of files that were written around the time of the power loss. Risking only file contents and not the FS itself is a tradeoff between performance and safety where you only get half of each. You can set it to full performance or full safety mode if you prefer.
