Another word being made meaningless, “pedophile”.
If pedophile now means having relations with 15 and 17 year old girls then what are we going to call men that want sex with 5 and 8 year olds?
pe·do·phil·ia ˌpe-də-ˈfi-lē-ə ˌpē- : sexual perversion in which children are the preferred sexual object. specifically : a psychiatric disorder in which an adult has sexual fantasies about or engages in sexual acts with a prepubescent child.
It's because the technical term for "sex with teens under 18" is ephebophile, which isn't as easy for people to say or remember.
Sort of like how the word "mural", which going all the way back to Latin has always meant "art painted on a wall", is now the word for "image painted on a street."