They've been playing a game of redefining terms for a few years now, at least since 2015.
People not paying attention (not wanting to be labeled with scary terms) basically fell for it and here we are.
"The disclosure came in a series of media briefings in which Apple is seeking to dispel alarm over its announcement last week that it will scan users' phones, tablets and computers for millions of illegal pictures."
Yes, this definitely "dispels" my alarm. Thanks, Apple.
One notable example would be the undergraduate Beginner’s Course in Topology - Geometric Chapters by Rokhlin et al. (Some “beginner” one must be, to be able to read it.)