Yes. That is true. Cheetahs are very calm animals. They might seem like intimidating cats with their large teeth, a deadly stare, and that awesome sprinting speed but there are sides to cheetahs you do not know about.
Cheetahs have been traditionally used for hunting in the past. Infact, cheetahs were tamed by Egyptians for hunting and to keep as housepets. Sure cheetahs are not as tamable as, say, a golden retriever but if raised from a cub they are pretty friendly. Even if untamed, cheetahs would rarely attack a human. The fact is cheetahs usually hunt smaller animals and they are not the apex predators of their respective environments.
Tribes with cheetahs for hunting (Image above)
Cheetahs are also not very powerful hunters and the long association with humans, they have co-evolved with us. Even today, some African tribes use cheetahs as hunting partners. In Fact, wildlife sanctuaries allow you to pet cheetahs they have bred. Cheetahs in captivity are raised alongside dogs since they love socializing and this also makes them safer than other big cats.
Cheetah being raised alongside dogs (Image above)
P.S.: Do not think they are completely tame. They might bite you if they feel threatened.