We don't take issue with the practices or beliefs, but the actions of their sponsoring groups. I am most familiar with.
Meditation is one of nature's miracles.
For most people it is an extraordinary experience that adds much to life. Many forms of meditation have been documented to offer specific benefits, such as lowered blood pressure and increased relaxation when practiced regularly. And TM seems to be as good or better than any of the forms of meditation that we know of. Absolutely none, if that were as far as it went. This simply isn't the case.