It sounds like they're doing primary training in a Bonanza. Isn't that
asking for trouble?

That was my first thought, too.
It's been said you can't attach a lot of significance to any particular
number because every pilot is different; nevertheless, a student pilot
soloing a Bonanza with just over 40 hours ... most of us are thinking
the same thing.

I am not certain there is a problem. They have been training their
students this way for many years.
Given the selection process the students must pass through just to get
in the program places those selected in the upper intelligence level.
A structured program will train the student the procedures to fly the
aircraft of choice.
Having experience with no other aircraft has the advantage that a given
situation will not confuse or distract the student from the necessary
procedures. The response should be automatic.
("Train like you fight, fight like you train")