I can present the conclusion that either nobody ever buys clothes that wrinkle, or we're all wearing wrinkly clothes.
The kids and I live in jeans, shorts and shirts that don't need ironing. If something gets wadded up fresh out of the drier it might get wrinkled. We wear it anyway.
Dd and I have a few button down blouses that look better ironed. I iron them about half the time. Most of the time they get hung up straight out of the drier, so they're 'good enough'.
My mother wouldn't let those shirts go out of the house unironed.
But Mom ironed underwear, too.