That may be the intention, but to me it looks like the EFF is just giving its employees a paid day off. Also, you're not really striking if your employer approves of it, and pays you for it.
There actions are to raise awareness. People reaching out to them on Friday or going to the website will see a shutdown notice. Meanwhile, employees are available to strike, document the day, or do whatever they wish.
yeah it may not be helpful, but at least it's starting a conversation. most people aren't even aware yet, and there's no way to raise awareness without a vacation. for example none of our web designers knows how to put a message on the website without shutting it down. and none of our managers knows how to shut down a website without taking a vacation.