Ah, it was just a much larger shift in the US, especially demographically. It went from 44% of adults (stats not gathered on younger folks, but anecdotally it was ‘cool’ and a lot of highschool age kids smoked) to 13.8% for adults (anecdotally many quite old) and only 8.8% for younger folks.
Traveling outside the US to Europe or Asia (eastern/southern Europe or China in particular) it’s very visible, where in the US outside of a few locations it’s almost invisible now and notably uncommon.
Especially for educated or higher income folks, too.