In most forms of Buddhism, what you said is true, but not in the form of Tibet Buddhism.
If you search "Tibet - Myth and Reality" in Google and look for an article in nbcsports, you will see it.
Here is a paragraph from there.
"Before considering Tibet today, some words should be said about Tibetan Buddhism as a religion. The accommodations it made with Bon resulted in its becoming very different from other forms of Buddhism, particularly from the more common and much larger Chan Buddhism of China (called Zen in Japan). Images found in Tibetan Buddhist temples are much fiercer than those found in other Buddhist temples, and some Tibetan ceremonies that once used human skulls, human skin, and fresh human intestines clearly reflect the animistic elements of Bon."
