If someone was a total disaster it would make sense
You just need to find a manager that wants you to join their team, if you can't do that after some exceedingly generous amount of time I think you are fired
Bootcamp is for finding a team. You already have a job. It is not an extended interview process. Sometimes it takes a while to find a team with mutual fit. There might be extreme cases where there is no fit at all but it is highly highly unlikely. I wouldn't worry about that at all.
Doesn't make sense that they would. Hiring someone only to fire them 1 month down the road in a training program?!