imo a major reason why people don't think very deeply about issues any more, is simply the lack of time:
In my childhood, there was no homework, no special dressing up days, also no activities where DC had to be ferried to - kids just played outside and came in when it was dark or rainy.
Also, although the working day may have been theoretically 30 mins longer or whatever, presenteeism hadn't started and most folk had much shorter commutes than today
The there was of course no Tinternet, iShinys, videos etc and only 2-3 TV channels, hardly any of it kids stuff
So, families had little else to do but talk in the evenings !
Family time was not child-centred:
My parents discussed the issues of the day, the TV news, past stories of what had happened to the country and the world
I listened and asked a few questions, which were always answered fully.
My parents were "elderly", born at the end of WW ONE, so the histories I received in childhood of the suffering in Great Depression etc is probably more typical of earlier generations than most boomers