I’m not trying to troll, I’m genuinely curious. Thinking about deer specifically, it doesn’t seem like visual camouflage would really help much when hunting them. Deer sense predators by sensitive hearing (big ears) and smell (long snout). Their eyes are on the sides of their head, so they detect motion rather than high-resolution.
So trying to blend in with the surroundings doesn’t seem to be an advantage in this case. Assuming all this, what’s the point of clothing with camo print on it?
With deer you’re typically using ammo such as a .308 or .243 Winchester. These are long range high velocity rounds that have very high lethality.
The long range part is important, a hunter 200 yards away wearing camo is probably mostly invisible and a hunter taking a shot at a deer at 200 or even 300 yards isn’t uncommon with this type of ammunition.
Shotgun shells have lots of small balls, they will often be concentrated more by a choke when people hunt birds, but their effective range and velocity combined with not being a solid mass make them way less dangerous the farther from the shooter they get.
This also means nobody is taking shots over long distances so the chances of noticing a hunter in camo is higher overall.
That said people do definitely get hit while wearing camo as was said above, it’s a risk, but if you know where you are and know your fellow hunters aren’t doing unsafe things those risks can be mitigated.