pointing a laser at a player does impact the play not only by creating an unnecessary safety hazard, it also is distracting to the players, officials and other game personnel that can be avoided. Creating noise to disrupt the play is one thing however using a laser pointer is both unethical and dangerous.
"can cause irreversible eye damage"
-Johns Hopskins,
http://hub.jhu.edu/2013/12/03/blue-laser-eye-damage