Yes, but in most cases there are 0 players and there are in game locks preventing games from starting without others. It does allow seeing a little bit of how it's played, but having actual people is preferred to see the whole experience.
Exactly, the problem is that all games had to be multiplayer!
Personally, I've been able to get my friends to play the other games with me, but some people unfortunately aren't.
I think it's a lot lower engagement than past jams right now. Maybe it will be better on the weekend, but we shall see.