Congratulations on learning that words have no intrinsic meaning, and the dictionary is constantly changing. Prescriptive linguistics is a hopeless battle.

You gotta drop this one, friend. There are better hills to die on. Hills that don't get you labeled a pedophile.

I think in this case the meaning is already effectively watered down. At this point it'd probably be easier to just give up and make a new term for pedophilia that is just for pre adolescents, and let pedophilia be the term for all "under age of consent" stuff (as is the current modern usage).

God forbid we actually use words of correct colloquial meaning instead of watering down the subject of molesting teens.