There you go, talking out of your a$$ like you invented the encyclopedia and everything in it.
“While they usually hunt alone, they usually hibernate in communal dens and often return to the same den every year. Beane said that populations in the "montane" (a forest area below the timberline with large, coniferous trees) often spend the winter hibernating "with timber rattlesnakes, rat snakes or other species."
Copperhead snakes: Facts, bites & babies
And you’re right about the chasing part, mostly. Snakes don’t chase people, at least for no reason. Snakes largely try to mind their own business, like the majority of the animal kingdom, unless they feel threatened or starved. I picked up plenty snakes as a child that were minding their own business and never once felt scared or threatened by them. That said, we unearthed a large rock, with multiple copperheads under it (who are ambush predators), who probably were very surprised (just as we were), felt cornered, and were probably not too happy when we dropped the rock in fear, and they absolutely chased us up a ravine. I’m not really afraid of animals (expect horses for some reason-mainly that they’re friggin huge), but that day I was terrified.
I’m not saying it’s a common experience, but it happened. And I’m not spreading misinformation. And maybe it’s unfair for me to characterize them as foul because of the one close encounter experience I had with them, but it is what it is and that is one species I will not come within a few paces of because of it.