I found your post extremely detailed and precise, so now I feel as if I have an overview of Dr. Chomsky's view of bilingualism. I found myself surprised by how valuable and interesting it is to read points of view (such as Chomsky's) that I disagree with.

I am Cuban and came to the USA when I was five. By the time I was 8 or 9 years old, Spanish was no longer my primary language. This was primarily the result of living in communities where there were only English speakers. I can still understand, speak, read, and write in Spanish, and it improves the more I use it. The example of the German man particularly intrigued me.