Didn't help that Google guy. The NLRB itself even issued some sort of opinion stating that he had violated corporate policy and that his firing was thus justified.
If by "that Google guy" you mean the one who got fired for posting critical memes about pay on Facebook, I'm pretty sure they were ordered reinstated and the notice was issued.
The Amazon folks fired here did nothing more than say they were concerned about working conditions on Twitter. It's hard to have a more explicitly protected activity.