1. EB-1: A visa given to an alien of extraordinary ability. The requirements for this are complex but a person with a decent lawyer should be able to navigate them provided the person has access to enough people in academia and industry who vouch that this person is of extraordinary ability.
2. EB-2: Employment sponsorship. Both academic institutions and industry have a standard practice of sponsoring people who have done any form of grad. school to a path that involves a green card.
Now, sure, 1) has overly bizarre documentation requirements (like for example requiring that one print out every paper that one has written and send it to USCIS) and 2) takes way too long for people born in India and China. This of course requires reform in a fair manner that takes into account other constraints like making sure that immigration doesn't become top heavy from two nations.
The sequoia capital article talks about foreign born students getting ejected. Do we have any quantitative data on how many of them are really being ejected? ( Acquiring a H1B visa to work in the United States is not hard. When, I (a foreign born student) graduated and applied for an H1B visa, it took ten days for it to get approved. ) Have there been surveys done on people who have voluntarily left for personal reasons vs. people who left because of this issue?