I think most people just have a defeatist attitude about changing clocks and never even try. I do find myself constantly fixing peoples clocks when I visit them. Almost none of them are hard or obscure.... like literally 95% of the time, there is a button labeled clock, 4% of the time there is an options menu, with an entry for clock. The other 1% can for sure be a bit more crazy... but for that 1% to be making people feel like they shouldn't even try to change clocks, not even looking to see if there is a clearly labeled clock button. There is something more going on.

I'm not some clock genius... and kids generally have no problem setting the clocks on stuff...so at some point it was learned behaviour that clocks are impossible to set... but learned how?