Well, MODEMs USED tbe acoustic, and people would actually "dial" the number, and most phones DID have dials! The term kind of stuck. Dial now means to convey the number of target circuit of the telephone connection you want to make. What would YOU suggest as an option?
Apparently, the first Flashlight DID flash!
A nickname for the TV is "boob tube". Who knows, that term MIGHT live on a while longer, even after CRTs are GONE!