How is this reasonable?

Who will do the training and how much will it cost? How long will FA's need to be off planes? Autism is a complex condition...should the training just consist of following the orders of parents at any cost?

Are there enough instances where autism causes an in-flight issue that all of the above make the cost of training worthwhile? I bet one diversion and a frivolous lawsuit cost less than the training.

Now, what about all the disabilities, medical conditions, and other disorders passengers could have? Why is it reasonable to train on autism but not everything else?

Why limit to airline employees? What about all bus drivers?

You may think it's reasonable, but it's completely impractical.

It's actually the mother that needs training. She needs to learn that a few quiet and polite words to the crew ahead of the flight will likely create a better outcome than threatening harm to other passengers.