L.W.
I think the answer is one of those, well it depends replies.
My own mostly black socks, worn only with civilized shoes, mostly not muddy, and I don't bother to turn them.
Or my husband's and kid's socks which are often a bit more needy.
Most of the time this is just fine.
Even so, sometimes when I'm emptying the dryer and turning the socks and putting them into pairs I'll hit a reject-wash-again sock.
And with my kid's socks sometimes there will be little bits of gravel or other crud inside it which have gotten through the whole cycle.
(Well, now it's at least clean crud.)
I don't mind dealing with quality control when things are a step cleaner, but it is less efficient.