I have two boys with Tourette Syndrome. Tourette's is really not disabling. It's really not devastating. It's really not a big deal. In fact, it can be generally ignored.
Most kids even grow out of it.
The biggest problem kids with Tourettes have is a lifetime of low self-esteem and depression brought on by the way they were treated by other children in school.
It is an easy choice to give my kids a brighter future by not forcing them to live with a future of depression and a bad self-image.
I don't shield them from the world. They do have to learn to interact with the world and the people who stare or won't let them finish their sentences or who wonder what's "wrong" with them. That's one reason I send them to school one day a week. But I sent them with other homeschooled kids, and homeschooled kids are not nearly as cruel as public schooled kids. They are more inclined to ask questions than to mock. It's the best of both worlds this way.
Another reason we homeschool.