Earlier quoted context omitted.
Maybe they are angry because they see this as somebody bribing young kids to make what might be the biggest mistake in their lives.
If delaying college for a few years is the biggest mistake you make in your life, you have been far too cautious. This position is discussed and Thiel addresses why it is not a reasonable position in the article. If you want to advance this position again, protocol says you need to provide a new argument or new evidence that was not considered in the previous round. Didn't down vote you, but think I understand why so…
Note that Thiel does not target kids that are about to go to college but kids that are already going to college. So he intentionally wants to interrupt an ongoing college education, not merely delay it. People say you can always go back but that is often not the case. If you are in a very competitive school or program it is very doubtful they will take you back if you took a couple of years off. Actually it would be probably impossible. And believe you me he will choose kids from competitive programs in order to get maximum news exposure. I can imagine how this can be a huge mistake at least for some kids.
It is just a very perverse situation ... he says here is all this money but you have to give up something to get it. Usually when one does charity one tries to help the people one does charity to, and does not pose to them difficult and maybe even dangerous bargains.
If he thinks these kids are so valuable, why would he not give them the stipend before they go to college or after they finish. It is just a couple of years difference either way?