He's not encouraging people to vote, he's encouraging them to shut up.
I disagree. Choosing not to vote makes a statement as well and your opinion can still be valid.
No, I'm stating that our government is designed such that the voice of the individual regarding governance is expressed through the ballot box. If you choose not to participate, you don't then get to claim disenfranchisement, or dissatisfaction with the perceived action or inaction of those who are elected. Nor do you get to claim that the president is justified in performing a legislative end-around, because the "do-nothing" Congress isn't legislating according to the will of the people.