Legitimate question here: Is there a legit reason to Firefox over Chrome at this point? I mean, its not performance, its not convenience, and now its not even privacy. At this rate, it looks like Firefox is going to end up just like Chrome, but slower and less fully featured.
2. Firefox is vastly more configurable and extensible than Chrome/Chromium. For example, Tree Style Tab and Sidebery are far better for managing hundreds of open tabs than Tabs Outliner, the closest alternative for Chrome/Chromium. This difference, like the one above, is mostly relevant to power users.
Given that 20 years have passed since Firefox was first released, and 99.99% of web users nowadays are casuals who never have more than a couple tabs open and would sooner kill themselves than learn about the many useful ways Firefox can be configured via about:config, user.js, userChrome.css, userContent.css, etc., the answer to your question is probably no.