Just as a stopped clock shows the correct time twice a day, occasionally my socks must match. I have lots of pairs of socks, all of them black, I never check if they match when selecting them, so different textures, shape etc, but .... who would notice? Besides, I only wear shoes at work.
I have several that are in need of darning most are solid red so are hard to miss match I have kids being a single dad and tending to the kids I can tell you that their socks almost never match. Who has time so sort through socks when there are so many more important things to mind to.
My socks always match. They’re all black, every one. Now then, do they always match the brand and style? Yes. I have to treat my feet equally. Poor guys. Life’s hard on them, I can’t make one jealous of the other for the better, or just different feeling, sock.
The only useful thing my first boss ever taught me (other than the warning signs of someone who doesn't know how to run a business): Buy lots of pairs of identical socks, then you'll never struggle to find a pair.
It works pretty well with white socks. Darker colours will fade depending on how many times they've been washed, and can end up colour mismatched over time. But broadly speaking, it's a good strategy.
I think I've worn odd socks once in the last 5 years. I wasn't going anywhere other than out to the car, and two white sports socks, but with different logos, were all I had to hand.
My son (about to turn 13) has worn odd socks for years. As long as he's got a sock on each foot, he's happy.