Kicker definition question

[kentref]

The new definition of a "kicker" (a player becomes a kicker when his knee, lower leg or foot makes contact with the ball) appears to change the way roughing/running into the kicker may be called.

I'm looking specifically at page 12 of the Simplified and Illustrated book which says that if the kicker doesn't meet the definition of a kicker (i.e., misses the ball in the kick attempt), and if the contact by R is not "unnecessarily rough" then there is no foul.

My question: If the foul is "unnecessarily rough" can this only be a roughing the kicker foul? It appears the addition of the "kicker" definition and contact that is not "unnecessarily rough" combine to pretty much eliminate the "running into the kicker" foul in this situation.

Comments and perspectives?