General rule of thumb: Every time an organization updates their terms of service and/or privacy policy, it is never because they have your best interests at heart.
Specific thoughts on this latest Mozilla action (https://blog.mozilla.org/en/products/firefox/firefox-news/firefox-terms-of-use/)
Setting aside the "worldwide license" bullshit, the privacy policy appears to have broadened both the classes of data Mozilla aims to collect, and the situations in which they collect them.
These are not the actions of an org that cares about your privacy.
@sarahjamielewis
This is why I think the @servo project to replace Gecko as an alternative to Google's Blink rendering engine is so important for the health of the Web. It can be the open source renderer that new alternative browsers are built around.