I think the specifics are correct but not confined to opera. I have no idea of how to convey the 'classical music culture' (if I could even define it) to "kids today" (ie., grandkids, who say "you listen to weird music"). That's with putting classical on the radio when I have them (captive!) in the car.

Interestingly, they do recognize clips (eg., Hall of the Mountain King) from various YouTubers stuff ("watch me play this game"), so it's not entirely out of the ecosystem.

Also, they are getting older, but ... the broadcast was 'Marriage of Figaro', I found myself bowdlerizing the plot: they're not quite ready to process the "right of seigneur". Most opera is PG!