All of them are now working on their STEM-OPT or an H1B, but the course had been paid off within the 1st year. They seem to be paid in exactly same range that levels.fyi reports and many are rising up the ranks at a pace beyond their median American peer in the same company.
It seems like a win-win to me. Universities make more money used to fund research and undergrad scholarships. The US gets a steady stream of the top 95+ percentile of developing countries. They meaningfully contribute to the economy and the US maintains it hegemony by literally sucking other nations dry of their most important resource.
Also, the US is literally (I mean literally, in as close a sense that figuratively will allow) impossible to immigrate to as a STEM GRAD if the masters programs didn't exist. L1 transfers are incredibly small in number and actually exploitative. No one sponsors an H1b when they have to wait a non-descript number of ears before their employee can join.
As for code sweat-shop H1b exploiters (infosys, TCS,etc), the H1bs in FANG+s hate them far more than your standard anti-immigration american.