He has taken a lot of positions, but these are hardly detailed proposals. Check out his early childcare education plan and then compare that to, say, Warren's childcare proposal (who has the most detailed policy agenda by FAR even if it's more difficult to find on the website).

https://www.yang2020.com/policies/early-childhood-education/

https://medium.com/@teamwarren/my-plan-for-universal-child-c...

You'll see other candidates outline their positions as time moves forward. Just check Sanders' website leading up to the last election: https://web.archive.org/web/20160714080659/https://berniesan...

This is rather common for all candidates. For example, Bernie Sanders outlines[0] all his positions in a similar fashion. I'd actually be more surprised if a candidate did not outline their positions this way.

[0]: https://feelthebern.org/all-issues/

That's because he's a noob. He thinks facts and "positions" matter in political campaigns. They do not. You don't publish an encyclopedia-sized set of "policies" (spot checking which I've discovered that many of them are extremely ill-conceived), and expect anyone to read, let alone remember any of them. In fact anything more than very general and ambiguous statements throw you into an argumentative morass in which you will drown as your opponents focus on the less thought-through parts of your program and blow it completely out of proportion. If, by some miracle, this guy makes it through the primaries, Trump will take him apart pretty easily.