Being in love with the tech doesn't make someone a good CEO. Notably, sometimes standing too close to a problem prevents one from seeing solutions. Let's maybe start with actual admonisions against her (and her replacement's) relevant qualifications, achievements, or character (or lack thereof), instead of grabbing pitchforks and venting about how she's the wrong person to get a greenfield browser off the ground; simply put, that's not where Firefox or Mozilla is at right now.