Possibly! They normally take flight when they notice a human nearby[1] but as the player you can certainly bump into them if you sneak up. And I think they just fall over and die if you do that.

The other claim in the article that's clearly untrue is the one about not hearing a line of dialogue twice. The idle dialog between NPCs definitely repeats fairly soon, sometimes within a minute or so. So I get the impression the author isn't particularly familiar with games and is quite happy to parrot some of the publisher's claims or perhaps they found some pre-release interviews where some of this was mentioned.

[1] As they should! Contrary to popular belief, the vast majority of wild mammals and birds in Africa, including predators, will be on alert it if they spot a human nearby and leg it if they get close. Safaris are only a thing because cars/safari trucks haven't been hunting or retaliating against predators for 99.9% of the last 100000+ years, and most animals can't distinguish the human figures/faces inside vehicles. This is another thing Far Cry 2 got right versus the subsequent Far Cry games, which are just crawling with highly aggressive predators and where the herbivores are essentially tame.