Firefox doesn’t include a keylogger. It does have the infamous privacy preserving attribution but this can easily be disabled in settings.

In contrast, Chrome is literally a tool for Google to gain as much personal information as possible for Googles advertisement platform. It has the worst privacy features of the three major browsers and cannot be fully made private due to crippled extension support.

Firefox engine has some catching up to do, but the Safari rendering engine is behind Firefox on features.