Well, yes, actually people DO think of several reasons this guy may be doing it. YOUR limited thinking leads you to assume there's only one reason: that he's "looking for his moment in the limelight." That's all the thinking you've done about it.
Others of us who've "really" thought can come up with other equally likely explanations for his doing it: he wants to convey a message on behalf of those of us (me included) who cannot be in NYC today; he wants to find out what the reaction will be of the people around him; he wants to gratify his own yearning to voice his own objection to Islam by the civil protest of burning a significant symbol aligned with one of the most significant dates in American history.
You, on the other hand, think no further than that "This guy is a childish clown looking for his moment in the limelight." No doubt you also think that a person who contributes to charity has no other reason for doing it than looking good in the eyes of others.
You're quite the person to be asking: Do people ever really think?
This man is going to need protection.