I read it as 'immorality' and that fits too, people over 40 tend to be more 'openminded' about loosening tight social norms. Obviously the age barriers are not

I read it as 'immorality' and that fits too, people over 40 tend to be more 'openminded' about loosening tight social norms. Obviously the age barriers are not fixed but culture-specific and have moved higher in recent generations. However there is the biological fact that humans age rapidly at age 44 and at age 65 which could roughly be the two ages the article is talking about