People think you have to give up privacy because the early players (Apple and Google) didn't make that a priority. People have gotten so used to apps that just harvest your data that it has become the norm instead of the exception. I do agree that you can have a great experience with a FOSS focused phone, as I only use a handful of proprietary apps that have no replacement.

The Definition I've always been taught:

a phone with the ability to install and run applications from an application repository (often called an "app store") without needing to "sideload" via USB

So no, your definition isn't inclusive of Smart Phones

Pre-smart would have the applications only be those set by a provider, and no way (without manually sideload installing via USB) to install extra applications

Edit: apparently I can't spell "applications", put it as "aplications"

For me a smartphone is a computer that you can carry in your pocket. No more.

Sure, brands are today adding loads of stuff, but a PC could do the same if some people were interested in.

To me a smartphone is defined as a full fledged computer with dumb phone capabilities.