@giganerd
Hello!
It's an interesting consideration. In nowadays world some choices are hard, either because you do not have enough evidence or because astroturfing and other operations are ongoing. At some point you must make a decision. We have carefully evaluated EFF operations especially on legal and law procedural grounds, software releases and informative/educational articles, and we have found an outstanding work.
We do not believe that Google huge sponsoring amount might impair EFF operations in the field of privacy (which is in our opinion a threat to Google current model and even more in the growing practical AI applications), at least not in the near future, and we hope that this is not the beginning of a "capture by sponsorship" (something which sinisterly reminds "regulatory capture" by big companies, although the means are different) which happened multiple times, for example with newspapers and publishers: I am a giant company and progressively buy your newspaper spaces for my ads, until you depend on me economically; then one day I tell you "do not publish that, rather publish this, or else I will withdraw all of my ads from one day to another".
Take Tor, as an additional example. It's no secret that we have significantly supported Tor and the Tor Project in the last years. However, the Tor Project has been funded almost entirely by the former Broadcasting Board of Governors (BBG, now USAGM), the US Navy and the US Department of State bureau for Human Rights for years. Is this enough reason to drop Tor and not use it anymore? No, because we have total lack of substantial evidence about backdoors to favor any the mentioned agencies or anybody else, and that a person that should be above any suspect under this context (Edward Snowden) recommends Tor usage.
Eyes must always remain wide open but at the same time if you get lost in a network of theories and you see conspirators everywhere you risk to get stuck and never act.
Kind regards