Yoga has gotten a lot of bad press lately. Does it really cause hip injuries?

Here are few examples of recent bad press:

http://www.huffingtonpost.ca/2013/11/15/yoga-injuries_n_4280083.html
http://www.nytimes.com/2013/11/03/sunday-review/womens-flexibility-is-a-...

I know it also does a lot of good for people as well. It seems a shame not to recommend clients to take yoga classes anymore. But I'd hate to be causing injury to anyone.

I'd love to know what other professionals think of this dilemma.