I am 18 and have owned 2 such phones. Where I grew up, it was kind of a luxury to own a smartphone in the early 2010s, so I've never really thought of these as some kind of ancient technology.
I'm 30 and remember my parents having these and my first two phones were Motorola razors. It was weird for most kids to have a phone until they could drive. Funny how quick it went from kids don't need phones, to well I guess they should if they're driving, to probably should be able to reach them anywhere but they don't need the smart one lol