Tor has too many legal and ethical issues around it for Mozilla to take that kind of risk.
> And stop attacking the Linux distros for the Firefox trademark (forcing them to create the Iceweasel fork) or including proprietary services (e.g. Pocket) forcing the creation of the Icecat fork.
Debian made a bunch of changes to Firefox and was still calling it Firefox. Debian also objected to Firefox's trademark policy despite Debian's trademark policy for their own trademark being virtually identical. This happened years ago and years before Pocket even existed.
Pocket code in Firefox is open source, you can examine it yourself. And, due to lazy loading, it's never even called if you don't interact with it. You can right-click and remove the button and never worry about it again. Using Pocket was to add a much-requested feature to Firefox without Mozilla having to invest to development hours into building something that already existed.