Definitely as a millennial I’m of the last generation that will remember arranging to meet up somewhere in advance and sticking to that plan (or rearranging over landline with more than a day’s notice…)
This is related to an interesting phenomenon I noticed while chatting about this with my parents. The question “where are you?” was hardly asked back in the day. With landlines, you already knew where they are. The only time that question was asked involved payphones. And those barely exist anymore either.
It’s fuckin annoying. The whole time I thought I was Gen X up until a decade ago. Then all of sudden other people are telling me I’m this bullshit.
For fucks sake, I remember using rotary phones and fucking with TV antennas to get better reception. I remember when no one had cell phones or the Internet. If you didn’t know an answer to something, you just made your peace with that.
It’s definitely cultural. I know people who consider it abhorrent. Other cultures teach their kids how to help serve the alcohol. For example, I learned how to make mojitos once I was old enough to carry the pitcher.