New comment by Piraty on void-packages repository

https://github.com/void-linux/void-packages/issues/27419#issuecomment-757882435

Comment:
~as this is something that needs to be applied to the firefox profiles in your homedir, there's not chance Void will touch that.~ there are indeed system-wide files that are used for profile initialization
there are generators for firefox profiles out there (for example: https://ffprofile.com/) that help you do this