I can imagine it's preventing someone from getting _into_ the language in the sense that if you run into such a situation, you don't have the mental tools to so

I can imagine it's preventing someone from getting _into_ the language in the sense that if you run into such a situation, you don't have the mental tools to solve it, and it won't feel just a mosquito bite but worse. Even if you manage to solve it, there's the nagging feeling that there might be more annoying hurdles to overcome – but you don't know yet, so you are prone to give it up and use your time for something else.