I can understand why they changed to 1v1 play, so that tourneys would start (at the time with 3 in).
Now we have the TD being able to join and play, there is a lot more chance of 1 v 3 starting.
Often, players will bet, then after the draw, fold.
Several times I have found myself in a situation where I bet after the draw, to find the other live player fold, but a bot go all in.
In the hands I have won, I have seen bots go all in with crap hands, like a lower number pair, with several higher cards on show in the middle.