I know it may be slightly irrational but it is definitely not hysteria.
The complete lack of confidence comes from the multiple failures of the same components. I accept we don't live in an ideal world but I would have hoped that any failure would be learned from and reliability improved. AH appears to want to get them in the air with a sticking plaster on as soon as possible. I base this on the shaft problems, how many times where we assured it was fixed, and the mgb catastrophic failure occuring twice? What has changed to make this once reliable and trusted aircraft so bad?
You also have to realise that it is unacceptably cramped for 19 people. It may be ok in the front seats but when you cant walk after two hours because there is absolutely no room to move in some of the seats you start to look for reasons not to fly in them. This is a really serious problem that the operators are unwilling to address.