We bash on Muslims who choose to cover their bodies for their religion. So why dont we bash the Amish for doing the same?

From my experience, usually when people use the word bash, they also mean criticism.

I criticise the burqa because it poses security risks. As someone who grew up in a war against Islamists, I am very familiar with stories of terrorist escaping through the borders wearing that, or doing suicidal bombings wearing that too. They must be identified so they can be stopped.

Even in Muslim countries, the burqa is being/will be banned. It is not a clothing that is recognised as Islamic by all of the sects/schools. And historically speaking, Mohammed didn't mean for it to be a permanent rule.