I think it is very tine consuming and hard work especially if you work full time or nearly full time and have dcs.
I didn't do skirting boards, doors etc for a few years when dcs were small. I just did surface cleaning and kept decluttering.
I concentrate on either a room or an area a week for decluttering. I try and do half an hour to an hour on Sat and on Sun. This is for the jobs I wouldn't do every week, eg tidy presses, wash windows. Outside of this, I do general washing and tidying. Concentrating on a room a week means the full room would get a deep clean every 3 months. I often can't deep clean a room a week esp. the kitchen and presses.
When cooking dinner or waiting for kettle to boil, I clean fridge, may wipe out a press. That way, the place is always reasonable. However, I feel there can be very little downtime the weekend days. I am either cleaning, tidying or taking dcs out.
The good thing about little and often is that I skip a weekend of the deep cleaning from time to time and the place doesn't get awful straightaway.
Re other people, I have noticed a lot of women my age,I am 50, have stayed working very part time even when dcs were teens. I think this is because they want to keep on top of the house and still have free time. A lot of people at dcs school have mothers with 3 dcs, all teens, and do not work outside the home at all. Then there are people who pay for cleaning. I think it is very hard work to keep a place reasonable if you work fulltime are 50s and have no cleaner. You have to sacrifice a lot of free time unless you live alone and are minimalist with possessions.