Google has already replaced the white list and blacklist words in chrome code with allowlist and blocklist because it believes the words are racist. GitHub has also announced that it will rename master / slave as a neutral word, and now Mozilla has joined them.The group plans to phase out the title of master password in all versions of Firefox and replace it with primary password.
In an article
Mozilla said this was done according to the "derogatory language" section of the Mozilla community engagement guide. In the future, users may no longer see Master / slave, whitelists, and blacklists being used in open source software code or other programming languages. Of course, there is no change in the way the master password is used in Mozilla browsers for users.