I'm saying no matter how big of a jerk he is, it doesn't matter.
Defensive players don't go: oh **** that's Desean Jackson. I'm gonna try to hit him harder! They will try to lay out whoever has the ball as hard as possible. As long as they do it legally, I don't mind it at all.
Desean could have been doing cartwheels into the endzone since Pop Warner, that says nothing about who he is other than an over-excitable guy who is the biggest deep threat in the league.