First, let me say I am not questioning this crew for the no call on the field. I know how fast this happens on the field. I also know what it's like to have your call replayed a zillion times on TV with everyone having their opinion.
This is a great discussion play because of the elements. Defenseless player, kicker, forcible contact all come into play.
In this play, I believe he is a defenseless player, but not because he is a kicker. The K in this play is in the same situation you would have on a punt with a gunner turning the corner in chase and an R player peeling back for the big hit.
I haven't searched to find other angles of this hit, but have only seen the .gif that is attached in an earlier post. Also, I did see the play live on a bar TV and watched most of the drunks celebrate this kids injury. With the editorial change in 2014, the fact that this hit appears to be "shoulder to shoulder" doesn't really have as much significance as in prior years when the rule stated "initial contact". The "Forcible contact" edit change was made for hits with initial contact below the neck/head area and the launch or other momentum results in forcible contact to the neck/head area. The angle of the .gif is difficult to tell if forcible contact ever got to the neck/head area. One indicator of targeting is a "launch". To me, this fits that definition by the player "leaving his feet to attack an opponent by an upward and forward thrust..."
All kick plays are train wrecks. Targeting is a foul you have to see start to finish and in a blocked kick scenario, that's a tough get. I wish #14 would have lowered his target area, which he easily could have done. Then, we aren't put in this situation. What I hate is that as long as the drunks still cheer the play, his coaches celebrate the hit and we say "that's just football", nothing will change, except more kids will just choose to play soccer.