Don't hammer on the fixed copperheads!
No, seriously. If the prevailing ethos is for maintained trails and comfortable clipping jugs, what then could be the legal ramifications for the landowner if a "user" was bitten by a copperhead while enjoying nature @ Muir? Is the spot provided by said landowner preened for comfortable landing? If so, does the presence of poisonous reptiles in the landing zone constitute negligence on the part of the landowner?
We should be very carefull with these sorts of warnings to fellow "users". Another question...were the snakes leashed?