I am not implying the comperssion algorithm Lz4 is bad. But adding an Lz4 layer to JSON files was a terrible idea by Mozilla.
Since Firefox version 56 (which is the last non-quantum version of Firefox), the session files in the 📁 sessionstore-backups directory are no longer recovery.bak and recovery.json, but recovery.baklz4 and recovery.jsonlz4. They should have called it recovery.bak.lz4 and recovery.json.lz4, which would be more logical file names, but they should not have done it in first place. Also the folders 📁bookmarkbackups 📁crashes/store.json.mozlz4 📁datareporting is affected (intoxicated) by Lƶ4.
“If it isn't broken, don't ‘fix’ it” does not apply to everything (e.g. when improving so