Feral kittens won’t come running to a human. These kittens have been fed by somebody for a while since they obviously see the man as a food provider.
Some jackass dumped a couple of litters in the woods.
I’ve actually had ferals (momma and kittens) come up the stairs on my back deck next to the woods desperately trying to get inside my house. Not one sound, just pushing and nosing at the door when I opened it to shoo them away. They weren’t afraid of me, but they weren’t friendly, either. They were definitely feral - momma wasn’t even a fully grown cat, either, not first generations of a throw out cat, IMO.....