I wish there was some sort of logitudinal data to demonstrate that the levels are still climbing or are just louder now due to shifts in design trends. There is not much data in this article aside from a few examples in New York which are probably not representative of the rest of America. That said, lately my partner and I (mid 20s) nearly always wear our hearphones [0] so we can speak in restaurants.
[0] https://www.bose.com/en_us/products/wellness/conversation_en...