Did you enable C2I in the monitor settings?

You should be able to control the brightness. There at least are many ways you can do this in Linux.

I don’t deny that the labour is physically harder, I’ve worked in my life retail, office and landscaping, I know that physical labour is tough. Though hard overall is subjective, I undoubtedly hated and found most every other job harder than my stint of about a year in landscaping, which was physically very taxing. The landscaping gig might have been the favorite job I’ve ever had.

But, no, I am not talking about people who work as farmers / labourers commercially, but instead the question is mostly about self sustained homestead / village living.

Growing uo I had small scale farmers in my family and had a countryside house where I knew a lot of the beighbours who lived there full time. Generally they seemed to have a couple of bursts of work during a day but most of the day was slowly and steadily attending to one or another chore / upkeep task

I would vager people living this way actually work far less hours in a given year than a person living a modern capitalist life, especially if you factor upkeep you have to do for your house after work etc, even if we assume a 40 hour work week, which lets face it, the average person probably exceeds (64 hours for me, personally).

Is it not true though that this is seasonal and overall people that live this way work less than the average person living a modern life?

It is not like you get home from work and have no chores etc. Realistically a lot of the work these people do is something that a person with a house would call chores / upkeep.