I don't entirely agree. It has often been the relatively young to drive social change. Emmiline Pankhurst formed the Women's Social and Political Union, later known as the Suffragettes, at age 47, with her daughters Adela (23), Christabel (23) and Sylvia (21). Gandhi starting civil rights campaigning at age 23. Martin Luther King led the Montgomery boycott at age 26. Older people are more likely to have conservative views. This may be due to ageing causing changing views, or generational differences (being brought up in times when homosexuality and abortion were illegal, and racist attitudes were widely accepted); scientists are still trying to pick those apart. But in both cases it is the young who are more likely to want to shift the status quo forward in the direction it has been travelling rather backwards to where it once was at some past point. In democratic countries, society is changed by voting and campaigning. A rational and ethical agent should vote and campaign based on their moral values and their understanding of the world. So moral values, especially about society, will and should always play a central role in people's political lives. Insisting that a person, young or old, stop spending time on the morality of society, is to insist they remove themselves from democracy.