Should non-Easterners not practice Buddhism?
Should non-Westerners not practice any Christianity that was born in the West?
Yoga means union and it is meant to be taught by well-trained teachers for health and well-being and for anyone who seeks and needs it. No Indian teacher would begrudge anyone that opportunity.
The tone of the article and some of your responses to replies sound as angry as you claim responders sound. Why is that?