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.
Exactly. I’m concerned they’ll use it to train an AI or something to “help me” use the internet and “make the most” of their services. I don’t want that, I want the browser to… browse, and only what I tell it I want to browse.