Maybe some of us are sick of Firefox fans taking this moralizing tone that we're somehow "damaging the cause" by simply speaking our mind when we disagree with your assessment. That doesn't make me a google shill, nor cynical. Just tired of the nonsense.
To steelman their argument, I'd say Google has grown so large and so controlling that literally anything that can provide a viable alternative should be cherished. Even if it's entity that is under questionable leadership like Mozilla.