A lot of foreign born workers are not H1B because they got their green cards or citizenship. I'd safely say a majority of them were H1Bs till recently. Till 2008, getting a green card for any country was not a problem. It has gotten a lot worse since then.
I have and even more, I know people who work in silicon valley. Have you been there?
Ignoring the fact that "90% of tech workers there were born outside the USA" is absolutely false, what does that have to do with H-1B visas?
It could be true that 90% of tech workers were born outside the USA and none of them could be H-1B visa holders. There are plenty of american tech workers who immigrated to the US as a child and became american citizens. Like sergei brin or jerry yang. They may be born outside the US, but none of them are H-1B visa holders. They were all american citizens.
The fact that you are intentionally lying and being sneaky with stats is very worrisome.
Nonsense. I am guessing you have never been silicon valley. 90% or more of tech workers there were born outside USA.
Edit: it is 70%, which is still very high. https://www.mercurynews.com/2018/01/17/h-1b-foreign-citizens...