WFH costs the worker more unless their commute fares are ridiculous, because they are running lights and heating, kettle etc all day.
Child care allowances became essential to allow women to work after kids. Many couples can't afford for the mother to stay at home.
UC is a handout to the employer, not the employee. If employers paid more, it wouldn't be needed. If employers hired full-timers instead of part-timers, UC wouldn't be needed. A Marxist analysis will tell you that state benefits for the unemployed and underemployed are there to maintain a reserve army of labour to be hired and fired at the employer's convenience.
You can't compare the 70s with its unionised workforces, full-time employment for most men, and low unemployment amongst men with an expectation that women could be SAHMs or work part-time for what my mum called "pin money" and the man would earn enough to keep the wife and two kids, against the current situation.
And house prices measured in single annual average salaries have soared in that time.