[BlueTemplar]

You won't be (as) competent (as you could be) because your understanding of the environment is going to be lacking. And would be tremendously more so if you weren't even competent in the language.

As an adult, you might (or might not) be able to mostly isolate yourself from your environment and its influence on you (probably not if you have to work). IMHO you are foolish to expect your kids to be able to do so (and it's not like it would be even a good idea to try !)

"Independent" doesn't mean "of the society", it means, on the contrary, adapted to it !

(No question that having critical thinking is good, but remember how it starts with trying to being critical of your own biases, a good portion of which stem from your own history : education, upbringing, culture...)