Joe Flacco has never been the loud, vocal type — hence why he's called Joe Cool by Ravens fans.
Obviously, that's been one of the things that his detractors point out as a "lack of passion" or a "lack of leadership," usually using that as a convenient segue to talk about him not organizing offseason workouts. Those people are the type to ignore things like the two game-winning drives Joe led against the Minnesota Vikings.
Ravens linebacker Terrell Suggs recently told reporters, jokingly, that Flacco should maybe use some more colorful language to fire up his teammates.
"Joe is just ‘Cool Joe,' and not all the time. He's not the most vocal, but sometimes we may need that. He may have to cuss somebody out; he may have to cuss me out. It's good to hear your quarterback get after somebody sometimes. I think it'd be a good thing. At the end of the day, we still love ‘Cool Joe' though."
Flacco's admitted in the past he's not the rah-rah guy and that he isn't the kind to do roaring speeches and pre-game dances like Ray Lewis became famous for. Heck, he even celebrated signing a huge contract by getting Chicken McNuggets in the drive-thru at a McDonalds (feel free to imagine what Johnny Manziel would do to celebrate).
And that's fine. There are great quarterbacks who got things done without using colorful vocabulary — John Elway, who Flacco has been compared to, Drew Brees, and a certain Joe Montana fellow you might've heard of.
Flacco shouldn't try to be someone else to please talking heads that aren't going to like him anyway. The way Flacco leads the Ravens in the huddle is working just fine.