[coldtea]

>It made me angry because makes the point that natural selection has become ineffective on humans

So it's a documentary?

Even the basic reproductive instinct has become "ineffective on humans".

>There is no joke in that - all jokes build upon the assumption of this being true

No, there are countless jokes in the movie that don't depend about how the world became stupid (be it cultural or genetics or combination) at all. Literally all of them are like that.

>If it were true, then decline wouldn't have begun in the 19th or 20th century but around the time that property and currencies emerged.

Why, did the movie say it's the result of "property and currencies"? And even if somebody said so, who said it's just about "property and currencies" merely being a thing that starts this decline, and not surpassing some level of development of property and currencies (e.g. late capitalism), which prevents mitigating factors from working?