How similar is that 70% to US students though. It amazes me how little my friends in the last years of their CS major know about CS or software, so it doesn't surprise me at all if 70% of all masters holders know very little about what they studied.

Hard disagree.

The reason to give almost anyone working a tech job a green card quickly is so they don't depress the market wage by being indentured serfs.

The absolute worst thing the US could do to the Indian IT sweatshops is to give a "tech worker" a guaranteed green card in 18-24 months so that they can change employers. Those companies would quit applying for visas almost immediately.

> approximately 70% of them somehow manage ..

Need a source for this. I'm sure there are a vast number of master's students who get their degree from shitty colleges to just be able to work here, but the vast majority of international co-workers I've had were amazing.

It isn't shitty colleges, it's just cheating. I've seen it first hand with people that I personally know in CS masters programs