Interesting thread.
What strikes me is the impression that these days people can't win.
We are overloaded with information and instruction, and herded by whichever zeitgeist is dominant, usually for profit making purposes cleverly disguised as beneficial in other areas.
Intelligence is basically a measure of how well one functions with regards to the system within which we operate.
Prior to industrialisation, people who grew our food and understood how to work with nature to do so optimally would be considered intelligent and useful. Now those who can swiftly adapt to the speed of technological advancement are revered.
What is being described as low intelligence in the OP strikes me more as personality traits, which may be related to intelligence I suppose. However, stopping inconveniently in a supermarket aisle could be due to a series of things going through a persons mind such as "Oh, pet food aisle, does the cat need biscuit? Is it still on the special diet or are we going back to the standard one - oh they've moved it all, oh that onr's on special offer, shall I stock up? Shall I ring OH and check - oh there's my neighbour - hello neighbour, how are you... " it's an ebb and flow of human experience.
I'm an overthinker so have a constant narrative and multiple variables going through my head most of the time. Whether it speaks to any level of intelligence or defect I don't know, but I am aware it can be exhausting for both myself and people around me, so I also spend alot of time trying to dial it down, adding another layer of preoccupation around fitting in and not pissing people off.
I am slightly envious of people who are unapologetically themselves, regardless of "intelligence".
In terms of bigger issues like politics and climate change, these are nebulous and ever changing. Being fixed on something that has been presented as "fact" where evidence can be contradictory is understandable as we need to feel secure as a species to function. And in this age of information overload, doubling down on the "unreasonable" or the "reasonable" is a self defence mechanism, underpinned by such soundbites as "if you stabd for nothing you'll fall for anything".
And teying to have conversations about this sort of thing often brings accusations of navel gazing or sixth form philosophical debate.
We're funny old creatures, ain't we?