I have a hard time taking Mozilla serious in this case.

If Mozilla where really against the NSA spying they would all their users to easily remove any Google ( and other third party ) services from Firefox. I understand why they won't, it would mean taking a financial hit, if I understand they business model.

It's not that it is "Googles fault", they are force to work with the NSA. However having services from a company known to work with the NSA so deeply embedded into your product weakness the impact of your resistance to the NSA surveillance program.