Except for basically made-up edge cases and google integration (which you shouldnt use in the first place. Install a password manager), i havent seen anyone make a good case against Firefox. Googles anti-adblocking measures have made Chrome less safe and their current attempts to "DRM" the web points is absolutely devastating. If you use the Fediverse, its sensible to assume you care about a freer web. Google is working towards the exact opposite.