Not really. They responded with a blog post "clarifying" some things but the only thing they actually reversed course on was applying their Acceptable Use Polic

Not really. They responded with a blog post "clarifying" some things but the only thing they actually reversed course on was applying their Acceptable Use Policy to Firefox as a whole. They're still putting a weird copyright license clause in their terms of use which only makes sense for Mozilla-operated cloud services but is written to apply to anything you do with the browser, and their Privacy Notice still enumerates many ways in which they track user data and sell it—to which their only argument is that they shouldn't have to call it "selling data" if they try to anonymize it. They're not going to back down on collecting user data; they will continue with actions that prevent them from legally saying they don't sell user data.