This kind of proves my point though. He knows he needs to really force his shots against Nadal (especially on clay) since trying to outgrind Nadal on clay is an exercise in futility but for how long can he really keep it up? Not very long, he always ends up reverting to his typical grinding (same vs Federer, against whom he sometimes tries to start more aggressively). It's not that he's never aggressive, but his default mode is defense for sure. He wins matches/tournaments by retrieving balls no one else would and frustrating/outlasting his opponents, not by blasting opponents off the court with his offensive play.
Well, but what is Ferrer's 'normal' game?
I mean he is always on the baseline, and he is always putting the ball back very deep, while tending to sit in his backhand corner. These are all things that favor stepping in and hitting inside-in and inside-out forehands to get opponents out of position (as you see in the video). That's not out of Ferrer's comfort zone, that's what his game is
When he plays Nadal he has to redline his game because Nadal is better offensively AND defensively (on clay anyway). That means he starts to make mistakes and loses the mental battle, but he still plays pretty much the same. Even in the FO '12 semi, he was still trying to hit through Nadal; he just wasn't powerful enough to do it.
Ferrer will never be able to blast opponents off the court, because he doesn't have the weapons to do so. But you seem to ignore all those points when Ferrer's plan is to move forward gradually into the court.