I'm glad they're making changes, but I'd advise everyone to keep a close watch on what they end up implementing and what potential security and privacy risks may be introduced.

It seems like I'm having to disable something or other with every major update of firefox lately, and as long as they continue to let me disable risky features I'll keep using it. Nothing strikes a better balance between useful and secure like hardened a firefox install, but it takes a lot of vigilance and a willingness to add or modify hundreds of about:config options (after installing https://github.com/earthlng/aboutconfig)