From the new terms:
When you upload or input information through Firefox, you hereby grant us a nonexclusive, royalty-free, worldwide license to use that information to help you navigate, experience, and interact with online content as you indicate with your use of Firefox.
Does having a ToS mean that Firefox is no longer FOSS? Freedom 0 of FOSS is: “The freedom to run the program as you wish, for any purpose”. Isn’t that violated if you can only use the software under the condition of accepting terms of service?
Firefox is FOSS, Mozilla’s backend services are not.
I think they mean Mozilla services such as ai, sync, etc. The browser itself probably doesn’t fall under it.